CN1248647A - Processf or preparing nylon 66 modified multifilament and the made multifilament - Google Patents

Abstract

To obtain a bulky yarn suitable for making knitted fabric with high productivity by using a new multifilament yarn consisting of a nylon 66 polymer with a two-functioned polyamide copolymer added as feeding a yarn and texturing it under specified conditions. This yarn consists of the nylon 66 polymer containing a small amount of the two-functional polyamide copolymer or a non-reactive additive capable of forming a hydrogen bonding to the nylon 66 polymer and has 0.8-1.2 g/d drawing tension(DT), 15-250 denier thickness and 70-100% elongation break(Eb) as feeding yarns. The yarns are textured at 200-240 deg.C and at >900 m/min texturing speed to obtain the objective textured nylon 66 multifilament yarns having <35% elongation and 50-80 relative viscosity. The two-functional polyamide copolymer may preferably have 2-methyl-pentamethylene adipamide as a monomer unit.

Description

The preparation method of nylon 66 textured multifilament yarn and the multifilament that makes thereof

Present patent application is dividing an application of CN90107068.8.The applying date of original application is July 10 nineteen ninety; The denomination of invention of original application is " an improved multifilament apparel yarns of nylon ".

The present invention is relevant improved nylon 66 multifilament apparel yarns, be particularly related to the distortion nylon yarn, applicable to knitwear, relate to partially oriented nylon (referring to partially oriented yarn POY or PON sometimes) draw textured feed yarn (promptly preparing apparel yarns) by this intermediate filament, also relate to the method for preparing this apparel yarns, and the method for preparing partially oriented yarn (POY) (by polymerization and high speed melt-spinning), use the method for POY, as one curling and other method is used POY, also relate to the product of making from above-mentioned yarn by stretching.

Synthetic line style hexamethylene adipamide polyamide filament (being often referred to nylon 66) has come out existing 50 years.The important use of this class silk is as the textured multifilament yarn yarn, as is used to produce the clothes of knitwear and so on.For satisfying various purposes, need textured filament to have high loft.For many years, this bulk yarn prepares in two steps of commercial usefulness: the first step, the nylon polymer molten spinning is made monofilament, this monofilament is at high speed (3000 meters of per minutes (mpm), be so-called high-speed spinning) under be wound as long filament volume, it is as partially oriented yarn (referring to as POY sometimes), as the Texturized feed yarns (or intermediate) (therefore, referring to be used to stretch a Texturized feed yarns DTFY sometimes) that stretches; In an independent process, this feed yarns carries out the crimping by stretching distortion on the industrial fiber draw texturing machine then.These methods are existing the description on several publications, as Adams.US3, authorizes in 994,121,1976.The POY that various types of stretchings one are curled realizes extensive commercial existing more than ten years, has promoted the improvement of Texturing Machines thus.The Texturing Machines that speed surpasses 1000mpm has used for a long time.But fact proved and be difficult to obtain required varicosity nylon 66 yarns at a high speed down at this; This is mainly limited by the limitation that is purchased nylon POY existence.So in the U.S., in order to prepare required bulk nylon yarn.Its deformation velocity is lower than 1000mpm fully in the nylon POY commodity production,, is lower than the Texturing Machines ability that can operate fully under flank speed that is.

Recently, the US4 of Chamberlin etc., 583,357 and 4,646,574 productions of having described this type of silk and having been undertaken by partially oriented nylon (Chamberlin is called PON)." Chamberlin " bends into as reference background of the present invention in the disclosed content of this patent.

Chamberlin has disclosed to increase to by the molecular weight with nylon polymer and has substantially exceeded the molecular weight values that in the past is customarily used in the nylon polymer of clothing product, improves the spinning product and the method for (PON).The molecular weight of nylon yarn utilizes 90% formic acid, by ASTMD789-81, calculates by measuring relative viscosity (RV).The DENIER number (denier) of making the nylon 66 of apparel yarns is 15～250.The dawn that is used for apparel yarns counts scope and is used for the nylon carpet yarn and contrasts, the two manufacturing is all different with processing, and different (higher) dawn numerical value arranged, some this type of carpet yarn had high relative viscosity (RV) value than clothes nylon yarn in the past, Chamberlin mentions when making apparel yarns, uses than conventional higher RV to have high and some other difficulties of cost.The higher RV of Chamberlin patent is preferably greater than 53 generally greater than 46, and is optimum greater than 60, can reach 80 (to nylon 66).Chamberlin has compared this class yarn and has surpassed the advantage that nominal polymer RV is 38～40 yarn.Chamberlin is disclosed in more than the speed 2200mpm, even high to the 5000mpm spinning prepare high RV high-speed spinning PON feed yarns that PONo Chamberlin has described him how on Barmag FK6-L900 Texturing Machines with 750 or 800mpm stretch one Texturizedly, promptly Texturing Machines has Rice primary heater (at 225 ℃), with the Barmag polydisc of Kgoceva ceramic disk associating, the ratio of D/Y is about 1.95.Operate under 900 meters/minute as the distortion of Barmag FK6-L900 shown in its title function, promptly the speed height that discloses than Chamberlin can also have the several years in the Texturing Machines commercialization of more speed operation.Chamberlin has obtained the curling value that represents than the conventional Si Genggao of 40RV, and does not have too much broken filament (wear debris) or silk thread fracture under these conditions.

Chamberlin explains in can operating the distortion tension range, stretch rate changes (under given draw roll speed) by regulating feeding roller speed, the also change thereupon of Texturized stress or tension force stretches, they should be high enough to keep stable (avoiding " slippage ") in the false twisting zone, and are low to being enough to avoid (too much) fracture of wire.Therefore, can operate in the tension range to regulate so that obtain maximum curling in this and represent value by the operation of " maximum distortion tension force ", even feed yarns can be out of shape under specific speed and other specified requirements satisfactorily, but can operate the distortion tension range still very narrow, narrow deformation range (or " window ") since limited Texturing Machines and industrial be disadvantageous.

Also can further understand with reference to figure 1, wherein tension force is relative with deformation velocity to be drawn this figure to be out of shape, and when operating under deformation velocity VL, the mean tension before the twisted insertion (refers to as shroud tension force T ₁) represent with large circle point, and, be to represent more accurately by tension distribution accurately along thread tension T, i.e. T ₁±-△ T ₁, △ T ₁About 3 times of representative standard tension force deviation.Therefore, stable deformation technique requires minimum tension force (T ₁-△ T ₁), rather than average shroud tension force (T ₁) must be enough high to prevent slippage.For example, in order to increase deformation velocity, increase deformation velocity (representing) by path A by regulating from VL～VH, under this condition, the result who obtains, although average deformation tension force as if can accept, whenever T ₁Process instability during decline, thereby slippage takes place.So in practice, the increase of deformation velocity is by increasing average T ₁(seeing path B) and increase distortion stretch rate are finished jointly.This high stretch rate can be avoided slippage, and stable deformation processing also just is provided, but the textured filament bulkiness that obtains is low, even also can fracture of wire take place the increase owing to distortion tension force when passing through twisted equipment.Hub disk tension force (T ₂) usually greater than shroud tension force (T ₁); Among Fig. 1 the high tensions value with 2 ' represent.For increasing bulk and eliminating fracture of wire, textured filament must be with tension force T ₂From 2 ' and be reduced to and be expressed as 2 low spot, realize by an increase dish and a silk relative velocity ratio (D/Y) usually, promptly increase shroud tension force (T a little ₁), reduce hub disk tension force (T greatly ₂), thereby reduce T ₂/ T ₁The ratio.Consider that higher D/Y ratio can add the loss and the silk friction of deep bid, the another kind of selection is to increase deformation temperature, because when temperature rises, and hub disk tension force (T ₂) generally than shroud tension force (T ₁) reduce more.This selection is also undesirable, and it will reduce the TENSILE STRENGTH of " heat " silk and increase the fracture of wire tendency during twisted insertion.

The distortion stretch rate of this balance, dish/silk velocity rate and temperature of heating plate often are known as " distortion window ", to given have increased the distortion of deformation velocity machine, " window " is a narrow slit, is found in Fig. 1.There is the tension force higher limit, surpasses this value fracture of wire then takes place, and even processing is interrupted.But be lower than the tension force lower limit, slippage and very poor along the deformation uniformity of yarn then takes place.

According to the present invention, find in conventional nylon 66 diacid and diamine monomer, to mix a small amount of difunctional polyamide comonomer, the deformation performance that can provide above mentioned high RV nylon 66 multifilament of further improvement to stretch a Texturized feed yarns.Preferred difunctional comonomer is an epsilon-caprolactams and from the monomeric unit of 2-methyl-pentamethylene diamine with adipic acid formation, and the latter is more excellent, this will chat in the back and.Epsilon-caprolactams is the monomer of preparation nylon 6 homopolymer, and Chamberlin thinks that this raw material is of inferior quality to the nylon 66 that is suitable for its purpose.Can be sure of not to be used for fiber from the monomeric unit of 2-methyl-pentamethylene diamine and adipic acid formation.Yet fiber situation of the present invention is compared with nylon 66 homopolymer fibre has unexpected superiority, and this will be in this paper discussion.For simplicity, will be along nylon 66 polymer chain random distribution (comprising) although know from the monomeric unit of 6 diacid with from the monomer of 6 diamines from a small amount of episilon amino caproic acid monomeric unit of epsilon-caprolactams, the use of epsilon-caprolactams additive sometimes refers to and is incorporated in the nylon 6.But other monomeric unit is random distribution also.Equally for simplicity, in fibre property relatively, particularly in embodiment and the diagram, the fiber of the present invention that mixes the episilon amino caproic acid monomeric unit N6 that is known as, 66, to show the copolymer difference with N66.Similarly, the fiber of the present invention that mixes from the monomeric unit of 2-methyl-pentamethylene diamine (MPMD) and adipic acid is called Me5-6, and 66, and be called Me5-6 from the monomeric unit that diamines and adipic acid (2-methyl-pentamethylene adipamide) form.Although the present invention is not subjected to the restriction of any theory, we infer that why small amounts of monomer additive such as nylon 6 or Me5-6 can improve performance is slightly different because of them and nylon 66 monomers, but the similar degree that can reach the formation hydrogen bond; Therefore can believe that improving homopolymers N66 can adopt similar a small amount of other comonomer that can form hydrogen bond, as difunctionality polyamide comonomer, other diacid comonomer, the diamines monomer, the amino acid comonomer, or the lactam comonomer and so on, even can use the non-reacted additive that can form hydrogen bond with nylon 66 polymer, as 7-naphtho-triazine radical-3-phenyl cumarin.

According to the present invention, it on the one hand provides the method that prepare distortion nylon 66 polyfilament yarns, and this yarn relative viscosity is about 50～80, comprises that stretching one is Texturized, and Denier values is approximately 15～250 feed yarns.When temperature is about 200～240 ℃, its percentage elongation (E _b) about 70～100%, in order to provide percentage elongation less than about 35%, preferably less than about 30% textured filament, it is characterized in that: deformation velocity is 900mpm at least approximately, preferably be at least about 1000mpm, feed yarns is nylon 66 polymer, wherein contain a small amount of this type of dual functional polyamide comonomer or can form the non-reacted additive of hydrogen bond with nylon 66 polymer, preferably this paper point out those.

According to a further aspect in the invention, partially oriented nylon 66 polymer polyfilament yarns are provided, its DENIER is approximately 15～250, percentage elongation (Eb) is approximately 70～100%, preferably be approximately 75～95%, the polymer relative viscosity is about 50～80, it is characterized in that polymer contains on a small quantity, the difunctionality polyamide comonomer of preferably about 2～8% (weight) or can form the non-reaction additives of hydrogen bond with nylon 66 polymer, feature is that also the tensile stress (DT) of silk is between about 0.8～1.2 (g/d), preferably approximately (140/Eb-0.8) to about 1.2, preferred silk is characterized as stretch modulus (M _D) approximately be 3.5～6.5 (g/d), tensile stress (σ _D) approximately be 1.0～1.9 (g/d), measure 75 ℃ of temperature, draw ratio 1.35X, apparent tensile energy (ED) a is about 0.2～0.5.The feature of preferred silk also is maximum dynamically percentage elongation (the △ L/ △ T) max of TMA.At about 100～150 ℃, 300 milligrams of shroud pulling force down for about 0.05～0.15%/℃, the susceptibility of (△ L/ △ T) max and stress (σ), d (△ L/ △ T) max/d σ is measured as about 3 * 10 under 300 milligrams/decimeter ^-4To 7 * 10 ^-4(%/℃)/(mg/d).

According to the N6 that the present invention uses, 66 polymer, preferred partially oriented nylon 66 polymer polyfilament yarns, its RV is preferably 60～70.When using Me5-6, during 66 polymer, RV is preferably 50-60.

According to a further aspect in the invention, it approximately is the preparation method of 15～250 nylon 66 multifilament spun orientation yarns that DENIER is provided, and it is to carry out melt spinning by the nylon to relative viscosity about at least 50～80 to realize.And this spinning silk winding speed is at least about 4500 meters/minute, be preferably more than the 5000mpm, but be no more than about 6500mpm, it is characterized in that nylon polymer contains a small amount of this type of difunctionality polyamide comonomer or can form the non-reacted additive of hydrogen bond with nylon 66 polymer.Preferred spinning condition is that polymer-extruded temperature (Tp) is higher 20～60 ℃ than melting point polymer (Tm), preferably the diameter of 20～40 ℃ of spinneret capillary sizes (D) is approximately 0.15～0.30mm, be preferably about 0.15～0.23mm, L/D ratio (L/D) is at least 1.75, preferably be at least 2, the spy is excellent to be at least 3, thus compression value L/D ⁴At least approximately be 100mm ^-3, preferably about at least 150mm ^-3, the special excellent 200mm at least of being ^-3, the scope D of fusion drawing-down ²/ dpf ratio provides, be approximately 0.010-0.045, the monofilament of new melt-spinning is with air quenched, the relative humidity of air flow is larger about more than 50%, and the spy is excellent to be about at least 70%RH, and temperature is about 10 ℃～30 ℃, speed is about 10～50mpm, preferably about 10～30mpm at about 75～150cm, is preferably about 75～125cm place's order silk boundling from the positive meter of spinning plate.

The further content according to the present invention, a kind of distortion nylon 66 polyfilament yarns are provided, its percentage elongation (Eb) is less than about 35%, preferably less than about 30%, relative viscosity is about 50～80, it is characterized in that this silk is made up of nylon 66 basically, but also contain a small amount of, this type of sense polyamide comonomer of preferably about 2～8% (weight) or can form the non-reacted additive of hydrogen bond with nylon 66 polymer.

N6 used according to the present invention, 66 polymer, the RV of advantageous version nylon 66 polymer multifilament threads.Be preferably 60～70, when using Me5-6, during 66 polymer, RV is preferably 50～60.

The present invention has also delivered the content of others, promptly use new silk further as the product of construction method and production thereof.

Fig. 1 (oneself mentions) is the diagram of drawing distortion tension force relative deformation speed.

Fig. 2 prepares illustrating of nylon POY method by the present invention.

Fig. 3 is the amplification cross section of passing a spinning plate front, and explanation is used to spin the spinning plate spinneret orifice of POY monofilament thus.

Fig. 4 to 22 can more specifically describe in the back in order to the difference of performance between explanation silk thread of the present invention (N6,66 and Me5-6,66) homopolymers nylon 66 silk threads (N66) and homopolymers nylon 6 silk threads (N6).

Crimping by stretching distortion feed yarns is described with reference to figure 2 and 3 by following method production, Accurate condition and variation have important impact to silk and the performance thereof that forms as everybody knows, and this can Understand from embodiment, the possibility of control is provided thus, some discovery is very unexpected .

Contain the difunctionality copolyamide comonomer that can form with nylon 66 polymer hydrogen bond Nylon 66 can prepare like this, namely in containing " salt " aqueous solution of proper proportion monomer Carry out polycondensation. The step that is suitable for producing homopolymers nylon 66 can be applied in the salting liquid and add Enter epsilon-caprolactams and produce N6,66. Make Me5-6,66, adipic acid with The mol ratio of six methylene difference diamines (HMD) and 2-methyl pentamethylene diamine (MPMD) The 2-methyl of the required percentage by weight of necessary satisfied production-pentamethylene adipamide (%Me 5-6), above-mentioned composition is for the preparation of salting liquid, for Me5-6, and 66, usually Must change common nylon 66 steps, rest on solution in order to be sure of volatile MPMD In have the sufficient time to react. 2-methyl-pentamethylene diamine can be purchased, by E.I Du Pont de Nemours ﹠ Co. sells, Wilmington, The Delaware trade mark is DYTEKA^R。

Starting polymer generally is the sheet form of 25～50RV (relative viscosity), It is imported container 1, and the incompatible raising of the conventional solid polycondensation of process RV value is (in control temperature and lazy The property gas condition moves down and anhydrates). The polymer that forms changes extruder 2 over to, at this this polymer Its molten mass pushes away the assembled unit 4 of delivering to a single spinning through a hot induction system 3 after the fusing (for convenient, only expressing one) if need, emits more water or from solid phase Derive thin slice in the thing, this solid polymer is lower than equilibrium humidity (water under the particular melt temperature Part), then can increase again by 5～15RV unit before the polymer RV extruding, can obtain like this Good result. Polymer melting body and function compression assemblies 5 is filtered, and representative condition is gross pressure (△ PT) 200～600Kg/cm², filter pressure (△ PF) 100～300Kg/cm², flow velocity 0.6～2.2g/cm²/ min, Extruded polymer temperature (Tp) is than high about 20～60 ℃ of melting point polymer (Tm), Preferably about 20～40 ℃. For N6,66 copolymers, extruded polymer temperature (Tp) approximately be 280～300 ℃, especially good with about 285～295 ℃ of tools Good effect. For Me5-6,66 copolymers, polymer-extruded temperature (Tp) is About 275～295 ℃, especially with about 275～285 ℃ of tool good results.

With reference to figure 3, the new polymer that filters is extruded by very little spinning plate spinneret orifice, wherein In Fig. 3, illustrate that such as diagram at this, polymer is pressed mass velocity W (gms/ for one Min) (=(every danier/9000 meter) * spinning speed mpm, namely with The proportional pore 21 that is metered into of dpf * V, by a large-scale capillarimeter metering-orifice 22, Be L by length again, mm, diameter are D, the spinning plate spinneret orifice 23 of mm. This spinning plate The spinneret orifice size impact is to extruded velocity (Vompm (Vo and (dpf * V)/D²Proportional), melt drawing-down speed (V/Vo) (V/Vo and D²/ dpf is proportional), melt shear rate (γ) (γ and (dpf * V)/D³Proportional), and spinneret orifice pressure drop (△ Pc) (△ Pc and the ((L/D of dpf * V)⁴) (η m) proportional), therefore assert to spinning properties, along a silk uniformity, The physical property of final fibre structure and spinning is all influential, must carefully select spinning speed (V), silk danier and the cooldown rate newly extruded thread.

The outer surface 24 of spinning plate need prevent monomer deposition and oxidation, and it is overheated by low flow velocity Steam directly leads to lower and is looped around around the extrusion. Remove to realize by a gas extraction system then . Remove during the monomer vapours, for keeping newly extruding the stability of silk, will control side direction especially Quench air comes the balance deflation rate, and is therefore significantly not single in 5～15cm Silk is clean mobile. If need, the silk of newly extruding can utilize solid or porous phantastron further anti-End turbulent flow.

Monofilament is approximately 75～150cm in distance, is preferably 75～125cm On be cooled to and be lower than the common clammy air 7 of its glass transition temperature (Tg) at 10～30 ℃ Relative humidity when being typically 20 ℃ (RH) is at least about 50%, more typically is 70 About %, typical case's (side direction) speed is 10～50mpm, preferably 10～30 Mpm prevents scattered indoor air stream with a screen 6. Monofilament optionally passes through radially The quenching unit cools off, and must select quench air flow rate to make it to obtain as the side direction quenching Get the required physical property along silk uniformity and silk.

Cooling silk carries out boundling, specifically is that bottom at shock chamber 8 is in about 75～150 Cm, best 75～125cm is by measuring terminal upper oil-pan from spinning plate front boundling; If need, also can use other boundling means, consist of the air injection such as pottery or wire guide. Be subjected to boundling length (Lc) impact along the uniformity of silk and the performance of silk. Typically select its distance From being more than 75～150cm and quench air temperature and flow velocity, thereby obtain institute's phase The balance quality of hoping.

Preferably by the terminal upper oil-pan of metering, spinning oil is coated to concentrated tow (is called Yarn) on, but also application roll upper oil-pan. Select spinning oil (be typically about 0.2～1%; More be typically about 0.4-0.7%, take silk weight as benchmark) so that at height When reeling spinning package (bundle) under spinning speed (V) 4500～6500mpm The silk of necessity and the friction between silk are provided, in being out of shape at a high speed, from the silk package, are shifting out then even Silk inserts friction between the silk that provides necessary to suitable twisting between the high speed deformation phases the most finally. The silk thread bundle directly is transferred to 4500～6500 meters/minute up-coiler 11 and (refers to here No draw-off godet spinning) on. Tow also can drive draw-off godet 10 through one and be sent to up-coiler. Shown in 9, carry out before the coiling silk thread intersect to obtain fully between silk percentage elongation and silk thread always in Poly-property, thus improvement is reeled and silk thread shifts out; But the intersection degree can not be high to hindering in distortion Evenly twisting is inserted. Feed yarns for high speed texturing machine 25-55 dawn number. Silk intersects Value is suitable with 10～15cm. Need to obtain silk thread cohesion and the silk that is suitable for twisting insertion Between necessary balance between the migration, this intersection degree also is subjected to type and the number of used spinning oil Amount and twisting are inserted, such as the impact of soft or rigid friction twisting dish.

Silk of the present invention is reeled under about 0.2～0.6gms/den tension force, without any need for the centre or after-baking satisfy stable.Silk can be through Overheating Treatment, as Adams, and U.S.3,994,121 disclosed steam heats are handled, or adopt in the prior art other method to handle before coiling to improve physical property; This processing to package stability or at a high speed silk shift out unessentially, but be suitable for than low speed spun orientation (POY or PON) silk, meeting the winding tension that package forms and silk is removed can be obtained by known mode.

Under high spinning speed as 4500～6500 meters/minute of the present invention, there is a narrow zone in the shock chamber, filament diameter sharply reduces in short distance herein, and the silk attenuation velocities rises rapidly simultaneously.This phenomenon often is called " constriction " area.Polymer chain orientations and crystallization just appear subsequently at necked-in region.Extrude a little to constriction (L _n) distance 75～150cm normally, and depend on machined parameters, as spinning speed, silk dawn number, polymer viscosity, polymer temperature, extruded velocity, quench air temperature, speed of quench air or the like.

Boundling length (L _c) compare L _nBe slightly greatly comparatively ideal.But preferably less than 1.25 * L _nAlong distance L _nAverage drawing-down speed can with ((V-Vo)/L _n) approximate representation.Usually, (Eb) indicated as higher tensile stress (DT) and lower fracture elongation (percentage elongation), higher drawing-down speed has strengthened the orientation of polymer chain.The degree of melt drawing-down can provide by the ratio of final spinning speed (V) and initial extruded velocity (Vo), and and D ²/ dpf is proportional, and the suitable selection of average degree and drawing-down speed must take in so that obtain along the coordinated balance between silk uniformity and the yarn physical property of the present invention.

Polymer malt viscosity of the present invention (η m) is to a certain extent by polymer relative viscosity (RV) decision, RV and MW ^3.4Be approximated to ratio, wherein MW is the polymer mean molecule quantity, it and polymer temperature (Tp) are inversely proportional to, η m and A Leiniesi (Arrhenius) expression formula exp (A/T) is proportional, to certain particular polymers type A is a constant, and η m is also proportional with the polymer melt shear rate (γ) by the spinning plate spinneret orifice.In high spinning speed above about 4000～4500 meters/minute, under about 40～45 conditions of polymer relative viscosity (RV), make melt viscosity η m rising increase crystallization and the amorphous regions orientation is reduced to astonishing degree thereby strengthen RV, promptly unexpectedly only in the scope of selected spinning speed V and RV.Yet have been found that and adopt alternate manner to increase melt viscosity (η m), for example lower polymer temperature and shear rate have increased the polymer chain orientation, and this can be shown by higher tensile stress (DT) and lower elongation at break (Eb).Therefore, ideal situation is not only to want the RV of selective polymer, also should selective polymer temperature and shear rate, so that polymer chain orientation and required crystallization are reached balance; Be the tensile stress of yarn of the present invention and the balance between the elongation at break.

Important advantage of the present invention is that it provides the industrial feasible way that makes total output reach maximum, spinning production capacity (Ps) (Ps=V * RDR of fiber generator not only, RDR=1+%Eb/100 wherein), and the distortion production capacity (Pt) (Pt and Vt are proportional) of twisting frame all reaches maximum, the realization of purpose relies on improved spinning process to come improved yarn, thereby has increased twisting frame production capacity.Accelerate spinning speed and normally increase the key factor of spinning production capacity, but this regular meeting reduces the percentage elongation of the feed yarns that forms, also just reduced the production capacity of Texturing Machines, the back will be explained.

In order to make the feed yarns that is drawn as low denier subsequently, as when the high-speed stretcher strain, feed yarns DENIER (Denier) f depends on used finished product stretcher strain DENIER, (Denier) t and leave over residue elongation at break in drawn yarn.Textured filament DENIER (Denier) t is by the user of twisting frame decision, and owing to appearance and function reason are different.The finished silk performance of textured filament, as modulus, fracture strength, its bulkiness is by textured filament elongation at break (E in a way _b) the t decision, (E _b) _tGeneral quantity is 25～35%, is preferably 28～32%, is considered as the description of product, and the fiber generator should provide suitable feed yarns, therefore, from the position of twisting frame production capacity, is appreciated that to increase the elongation at break of feed yarns of the present invention (E why _b) _fBe favourable.

Embodiment 1 will show, contain a certain amount of nylon 6 comonomers in the polymer and (can form hydrogen bond with nylon 66 polymer, as caprolactam) have unexpected advantage, promptly it can not only increase the elongation at break of nylon 66 feed yarns, and to specific elongation at break (E _b) _fCan also reduce tensile stress (DT), then under high deformation velocity, be easier to feed yarns is pulled into 25～35% required finished product percentage elongation fully, and can not lose bulkiness or cause fracture of wire, based on corresponding nylon 6 and nylon 66 homopolymers characteristics separately, these effects are unexpected.Can infer, random nylon 6 caprolactams that are incorporated in high molecular weight nylon 66 polymer chains are the sources as metastable hydrogen bond place, it is different from those nylon 66 homopolymers, and can select intercrystalline polymer chain network by the mode that increases network stretch capability and the required strength that is used to stretch of reduction.

The Texturized silk that stretches is by obtaining Me5-6 with 2-methyl pentamethylene diamine (MPOD) improvement in the nylon 66,66 copolyamide fibres and preparing.It contrasts with nylon 66 homopolymers that obtain separately under specific spinning speed, reduced tensile stress (DT), with N6, the contrast of 66 copolyamides, also reduced tensile stress (DT), if can reduce shelf time oligomer sedimentation rate from low RV spinning more satisfactoryly, the especially preferred Me5-6 of being concentration is about 10%, and the low relative viscosity (RV) of polymer is about 50～60.Because exist less low polymer (oligomer) to believe in the discovery polymer so is because MPMD can get very complete with the adipic acid polymerization, there is not monomer to discharge difficulty at spinning duration, according to the situation that nylon 6 is arranged, when needs low shrinkage and deformation silk, allow Me5-6 greater than 10%, until about 20%, when the high contraction distortion silk of needs, can reach about 35～40%, more than be the preferred limit 2～8% of 66 of the improved nylon of relative N6.Be different from N6,66, to specific tensile stress, Me5-6,66 percentage elongation does not obviously increase, the spinning ability that has is between N6,66 and N66 between (comparison diagram 6 and 14), can believe, the same with nylon 6, mix Me5-6 in the N66 polymer, relative nylon 66 and nylon 6 homopolymer, it has destroyed formation hydrogen bond position and reducing tensile stress under same spinning condition.66 of the improved nylon of N6 and Me5-6 have all strengthened dyeability, and this is considered to relevant with more accessible intercrystalline zone, and this zone is higher than in speed and has increased stretch capability under the 1000mpm condition and improved deformability.

It is Texturized that new structure is more suitable for high-speed stretch one, is its formation, preferably controls the spinning process condition, promptly controls and provide appropriate coordination (balance) between the quenching speed during the long filament DENIER reduces before drawing-down degree and speed and the constriction.

In addition, increase feed yarns percentage elongation (E separately _b) _fTo increasing production capacity is not enough, if Texturing Machines is the feed yarns that can not stretch fully owing to need high tensile force, feed yarns can not be entirely Texturing Machines than high-elongation and utilize so, therefore thereby Texturing Machines needs lower feed yarns dawn number to obtain required finished product textured filament dawn number, has higher residue percentage elongation (E because feed yarns must be drawn into _b) _t

Another advantage of novel feed yarns is by feed yarns is provided, and this energy becomes satisfactory finished product dawn numerical value at the high deformation velocity pull-down, provides bulk yarn to increase the production capacity of Texturing Machines.

This type of advantage can be from the data acknowledgement the following embodiment, and clearly, these advantages are to obtain in stretch process rather than stretch one Texturizedly, as radially one obtaining in stretching, use feed yarns of the present invention also can advantageously realize the air jet texturing that stretches.

The present invention further specifies in the following embodiments; All compositions and percentage are all used gravimetric value.

Example I

Several stretching one Texturized feed yarns adopt this method and device preparation.This method and apparatus oneself illustrate and under the given condition of table 1, chat in front and, obtained the silk performance that needs.That is, tensile force (DT) and percentage elongation (E _b).Example I-1 to I-24 and I-47 to I-92 explanation distortion provides knitting welt yarn (to contain 0.3%TiO with the feed yarns of nominal 53 DENIER (13 monofilament) ₂) example I-25 to I-46 show the distortion provide knitting leggings silk (to close 0.08%TiO with nominal 25 DENIER (7 monofilament) ₂).The DENIER of measuring is seen the 2nd hurdle, and spinning speed (referring to V here) is seen the 3rd hurdle.The 4th hurdle is " N6% ", i.e. the weight content of N6 monomer.

Compare silk N66 homopolymers I-1C to I-12C, I-39C to I-46C, I-63C to I-92C do not belong to the present invention, and the 1st hurdle is represented to distinguish with feed yarns of the present invention with letter C, be that I-13 to I-38 and I-47 to I-62 mostly contain 5%N6, and I-25 to I-28 only contain 2.5%.Fund I-52C-54C and I-59C-60C contain 5%N6 and do not belong to preferred version of the present invention, because its tensile force (DT) and percentage elongation (E _b) be unsuitable for distortion at a high speed, but it is Texturized to be fit to low-speed tensile, and air jet texturing and the processing of other stretch textile are as tensile axis (draw beaming).The RV value of three example expression starting polymer thin slices, and value added (△ RV) between these RV values down, and the minimizing value is represented with bracket.Last two example expression tensile force (DT, gram/the dawn) and percentage elongation (Eb%), it is unexpected that the result is discussed, all monofilament all have the circular section, the spinning plate orifice diameter D that uses be 10 mils (mils) (=0.254mm), L/D=1.9 (promptly long for 19mils) only is useful on I-20 and I-21, its diameter be 9mils (=0.229mm).The quench air that provides during 21 ℃ of temperature, relative humidity (RH) 75%, lateral velocity 18mpm through the about 100cm of distance, presses reflux type.Monofilament carries out boundling by the terminal upper oil-pan of metering.The boundling length L _c=135cm, but to I-18, I-20, I-21, I-52, I-53, I-59, I-71 and I-77 adopt 122cm, I-11C, I-19 and I-38 adopt 140cm, and spinning oil dosage (FOY) is nominal value 0.45%.Nominal interweaves and is about 12.5cm.

Relatively using 100% nylon 6 (N6) the homopolymers Texturized welt feed yarns that stretches is that such spinning: nominal RV is that 36.4 starting polymer (contains 0.3TiO ₂), before extruding, its RV is increased to 47.7～72.2 through a SPP, under 275 ℃ of the polymer temperatures, by diameter 0.254mm, the ratio of L/D is that 1.9 spinneret orifice spinning plate is extruded, and uses the 18mpm flow velocity again, the air at room temperature of 75%RH cools off suddenly, carry out boundling through measuring terminal upper oil-pan again, distance is 135cm, obtains 13 monofilament yarns at 52 dawn of nominal with the spinning of 4300～5800mpm spinning speed.Relatively use DENIER spinning speed, the silk relative viscosity RV of silk for the N6 homopolymers, tensile stress (DT) is all always listed in the Table III.

Embodiment 2

The technology of this routine substantially similar example I, welt of the present invention adopts various spinning process condition preparation with yarn, its condition is always listed in Table II, so as to the unexpected effect in hot transmission aspect in silk tensile stress (DT) and the drawing-down technology of explanation melt rheology, it discloses how to obtain required low tensile stress (having required percentage elongation) during fibre structure forms, just controlling polymers chain orientation, stretching and crystallization, thus make full use of the unexpected ability of the present invention.The silk of nominal 53 DENIER (13 monofilament, circular sections, contains 0.3%TiO ₂) spinning under 5300 meters speed of per minute, can observe,, reduce melt viscosity (η m) by rising polymer temperature (Tp), increase spinning plate spinneret orifice extruded velocity (Vo) by entering very little spinning plate orifice diameter (D), and strengthen spinning plate spinneret orifice L/D ⁴Ratio increase spinneret orifice pressure drop (△ Pc), can both reduce tensile stress (DT), DT reduces polymer relative viscosity (RV) and causes that it is opposite response that melt viscosity (η m) reduces.Contrast with it, by reducing the tensile viscosity (η E) that quench air flow rate reduces new extruded monofilament, the temperature of rising quench air postpones quenching as using, and then can increase tensile stress (DT).In addition, pointed out by routine II-20 and II-21, after SPP, partly increase rapid compound RV in the melt extrusion system, specific finished silk RV has been reduced tensile stress (DT) (wherein at II-20, to be increased polymer RV and realizes by SPP fully; Thin slice RV39.0 → SPP thin slice RV promptly is provided,, increases silk RV and only partly obtain, in melt delivery system, finish again, that is, provide thin slice RV39.0 → SPP thin slice RV62.3 → melt extrusion/silk RV67.3) by SPP at II-21.In conjunction with the difference of these tensile stress processing responses, just can reduce the polymer tensile stress independently with polymer RV and spinning speed (V), this is at US.4 such as Chamberlin, does not relate in 583,357.

Embodiment 3

Utilize the method for example I, it is 1～7 that silk of the present invention has the dpf scope, and this manufacturing sees Table III.Adopt the equipment of big polymer delivery rate can obtain the dpf higher than this example.As if when the dpf of silk silk performance greater than 2 time changes, this moment, DT was less, the percentage elongation of silk surpasses dpf less than 2 silk.

These usefulness contain 0.3%TiO ₂, 41.6RV feed thin slice spinning.It is 63.9 that thin slice RV rises to a RV through SPP, under 293 ℃, extrude from the 13 hole spinning plate of L/D=1.9, the quenching of effluent (blowing) wind, temperature is 21 ℃, RH75%, 18.3 meters/minute processes of speed 113.7cm distance,, reel in 122cm place boundling by a terminal upper oil-pan of metering by 5300 meters/component velocity.

Tensile stress is not at 185 ℃ but at room temperature to measure in this example, so Table III is at DT ^*The row top indicates to be had ^*Number.

Embodiment 4

This example compares with feed yarns (I-38) with feed yarns and welt of the present invention the knitting welt of the commercial low speed spinning of nylon 66 (N66) homopolymers of nominal 45RV, I-38 is by the nylon 6 of nominal 68RV, 66 (N6,66) copolymer is by the spinning of 5300 meters/component velocity, and with Barmag FK6-L10 (warp architecture) deformation process under 800 meters/minute, Barmag FK6-L10 is furnished with 1-4-1P101 plate-like ventilation unit, 210 ℃ of heating plate temperature, distortion extensibility (TDR) is 1.3287, and the D/Y ratio is 2.04.As suspecting, to textured filament control group and textured filament of the present invention, they reach in distortion and store about 30～45 days (see figure 7)s after stablizing bulkiness, measure with Lawson-Hemphill, find that the bulkiness of above-mentioned two kinds of textured filaments all reduces.Textured filament bulkiness of the present invention is greater than the textured filament control group, thereby silk of the present invention can be out of shape under high deformation velocity (VT), provide satisfied leavening effect simultaneously, but homopolymers silk control group can not be realized then.

Embodiment 5

This example compares with feed yarns (II-9) with feed yarns and welt of the present invention the knitting welt of nylon 66 (N66) homopolymers low speed spinning of nominal 45RV, II-9 is by the nylon 6 of nominal 68RV, 66 (N6,66) copolymer is by the spinning of 5300 meters/component velocity, and with Barmag FK6-L10 (warp architecture) deformation process under 900 meters/minute, Barmag FK6-L10 is furnished with 3-4-1CPU dish ventilation unit, 210 ℃ of heating plate temperature, 220 ℃ and 230 ℃, distortion extensibility (TDR) is 1.3287～1.4228, the D/Y ratio is 1.87～2.62, the present invention's (II-9) silk compares with homopolymerization silk control group, (see Fig. 9, wherein be out of shape tensile stress σ at whole D/Y than scope ₁In 220 ℃ TDR is mapped, getting the D/Y value is 1.87,2.04,2.45 and 2.62), disk stress (σ before both have similarly ₁) (σ ₁=(T ₁, g/d) * TDR), but the former distortion stretch modulus (MD, T) low slightly (MD, T=△ T ₁/ △ TDR).

No matter contrasting cocainine still is silk of the present invention, and the textured filament bulkiness is all with distortion tensile stress (σ ₁), deformation temperature, and D/Y than and increase; But the present invention's (II-9) textured filament bulkiness is to certain variations tensile stress (σ ₁), its σ ₁Value is compared according to (see Fig. 7, wherein textured filament bulkiness (degree) is measured by Lawson-Hemphill TYT, at nominal σ about the big 0.475G/D of cocainine ₁During=0.475G/D, expression-form is the ratio of TYT bulkiness with the textured filament tester bulkiness of given deformation silk).The higher bulkiness of silk of the present invention makes the twisted filament function that deformation velocity is increased to more than the 1000mpm, and can obtain same bulkiness under the lower deformation velocity of 800～900mpm.This can not finish with conventional low speed spinning homopolymers feed yarns.

Embodiment 6

The more knitting welt of this example feed yarns deformation performance, this feed yarns by nominal 64RV polymer with 5300 meters/minute spinning, employing is furnished with the Barmag FK6L-10 machine of 1-4-1P101 frictional disk ventilation unit, the speed of 900mpm is carried out deformation process on 210 ℃ of heaters, using 2 different D/Y ratios therebetween is that 2.04 and 2.62,6 different distortion draw ratio (TDR) scopes are 1.2727～1.3962.Feed yarns of the present invention is I-37, with homopolymers N66 feed yarns I-46C in it and the Table I relatively.Each shroud tensile stress (σ ₁) list in Table IV, computational methods are shroud tension force (T ₁) (gram), divided by former feed yarns dawn number, multiply by distortion draw ratio (TDR) again.Merit attention, feed yarns of the present invention is out of shape under lower shroud tensile stress in the Table IV.(MD is T) with σ for the distortion stretch modulus ₁Change also very little with TDR.

Embodiment 7

The following two kinds of silks of this example: (1) is by nominal 66RV nylon 66 (N66) homopolymers (I-11C), by the knitting welt feed yarns of 5300 meters/minute spinnings; (2) welt of the present invention feed yarns (II-9), it is by nominal 68RV nylon 6,66 (N6,66) copolymer spinning.Employing is furnished with Barmag FK6-L10 (warp architecture) machine of 3-4-1CPU dish ventilation unit, and 900 meters/minute speed is carried out deformation process on 220 ℃ of heaters.Distortion draw ratio (TDR) is from 1.333～1.3962 variations, and D/Y changes from 2.04～2.62.No matter D/Y value low (2.04) still is high (2.62), and silk of the present invention (II-9) has lower preceding disk stress (σ than homopolymers silk reference substance ₁) and very low distortion stretch modulus (MD, T), and the D/Y value is when changing, T ₂/ T ₁Value has bigger reduction, is expressed as: △ (T ₂/ T ₁)/△ (D/Y) (sees Figure 10, wherein σ ₁To the TDR mapping, get D/Y=2.04,2.62, and I-11C and II-9 silk.

Embodiment 8

The various knitting feed yarns of 5300mpm spinning adopts Barmag FK6L-10 Texturing Machines, by warp architecture in 1100mpm and 220 ℃ of processing down.Silk performance of the present invention is compared with 66 of homopolymerization nylon, and silk of the present invention can be in the stretch rate and the distortion of D/Y value scope of broad.

Leggings (Leg)--to the leggings silk, feed yarns RV is 66, adopts the Texturing Machines of the bent structure of change with 1-4-1P101 dish ventilation unit, gets two different D/Y values (2.45 and 2.04), 220 ℃ (1100mpm).When draw ratio was 1.328X, feed yarns of the present invention all can satisfactorily move under all above mentioned conditions; Homopolymers relatively also can be processed in D/Y value=2.45, but then processes instability when D/Y value=2.04.When stretch rate was 1.378X, the present invention was better than the operation of tester homopolymers under two D/Y ratios.When the higher draw ratio rate is 1.396X, have only feed yarns of the present invention to move, the contrast homopolymers then can not be processed satisfactorily.

The a pair of welt silk of welt, the RV of contrast homopolymers is higher to be 66, and silk of the present invention only is 63RV, adopts the Texturing Machines of warp architecture and 3-4-1CPU dish ventilation unit that silk is carried out deformation process.Used D/Y value is 2.24 o'clock, and two kinds of silks are all can move under 1.298X and the 1.3475X at stretch rate, but when stretch rate increased to 1.359X, feed yarns of the present invention was better than the operation of homopolymers contrast silk.As ratio higher (1.378X and 1.396X), then have only feed yarns of the present invention to process, and homopolymers contrast silk can not be processed, and the D/Y value is 2.45 o'clock, and (two kinds of silks can both be processed when the 1.298X stretch rate, when 1.359X, feed yarns of the present invention is better processed, and when ratio reaches 1.396X, has only feed yarns of the present invention to process, when the D/Y ratio was 2.04, silk of the present invention was better processed than homopolymers contrast silk under stretch rate 1.298X.

Embodiment 9

In this example, leggings feed yarns of the present invention (I-37) is successfully handled distortion under the following conditions.Complete commercial size Texturing Machines, on Barmag FK6-S12 (cascaded structure), the nominal fracture rate is every pound 0.06 under 1000 meters speed of per minute, Barmag FK6-S12 is furnished with 1-5-1P101 dish ventilation unit, 215 ℃ of heating plate temperature, and distortion extensibility (TDR) is 1.30, D/Y value 2.42, σ ₁Be 0.42g/d.Textured yarns is made into knitwear with 1500RPM speed, and this speed is for now drawing high limiting value with braiding machine, and homopolymers of the prior art or copolymer yarn can not obtain this deformation performance and knitting property.

Summarize to aforementioned, embodiment 1-3 has described by three kinds of feedstock production Texturized feed yarns that stretches, it is homopolymerization nylon 66 (N66) control group, homopolymerization nylon 6 (N6) control group and silk (N6 of the present invention, 66 improve and get by adding nylon 6 monomers in the nylon 66), embodiment 4-9 illustrated 900 and 1100mpm under, the improved stretcher strain performance of some feed yarns of the present invention, also point out only to use the deformation condition zone of novel feed yarns broad, promptly increased deformable window; Make thus commercial Texturing Machines (in fact in too limited window, can not operate) thus having an opportunity to use the high speed deformation process provides required bulk yarn.The performance of the back will be discussed novel (N6,66) silk and with the difference of N66 silk be very obviously and beyond thought.

Chamberlin thinks that (embodiment 6) high RV nylon 6 is important not as nylon 66, and the data of nylon 6RV up to 100+ are provided simultaneously.

Studies show that, N6,66 feed yarns performances exist different greatly with N66, this can illustrate from the important improvement of characteristic (as the Texturized feed yarns that stretches, these improve and also can be reflected at the better characteristic aspect that is used for other purpose, as other stretch process, especially radial drawing stretches a footpath axle or stretching radially sometimes mutually).

As shown in table 1, under high spinning speed, the percentage elongation of N66 fiber increases with the RV of silk.In Table VII, under the high spinning speed, the percentage elongation of N6 fiber also strengthens with the RV of silk equally.The data of associative list I N66 homopolymers and Table VII N6 homopolymers can not show and mix a small amount of nylon 6 single polymers can further increase N66 under specific spinning speed and RV E _bValue.Its performance can expect to turn to the performance of nylon 6 copolymer, promptly lower E _bTo higher D _T(see Fig. 4, wherein tensile stress D _TTo the mapping of silk RV value, get 5300 meters/minute of speed respectively.The N6 that is spun into, 66 and the N6 that contains 5% N6 monomer, 66.See Fig. 5, the minimum stretch tension force of wherein specific spinning speed Tt i.e. (DT) min and corresponding E _bTo spinning speed mapping, use N6 respectively, N66 and contain three kinds of samples of 5% nylon, 6 monomers.

The N6 that is spun under the 5300mpm speed, N66, N6,66, their tensile stress (DT) is shown among Fig. 4 with silk RV relation table, should note some among Fig. 4, at first, increase with polymer RV, tensile stress (DT) reduces, this just must increase percentage elongation, second, the tensile stress of N6 is higher than N66, and the 3rd, although polymer is N6 when low RV value (less than about 50), 66 have higher tensile stress than N66, but (speed is surpassed the silk that about 4500mpm is spun into) when the RV value is increased to about 50 when above, N6,66 tensile stress become littler than N6 and N66.Though by the RV value is that 40～50 copolymerization silks that make have high tensile force, undesirable to stretcher strain, find that simultaneously the big copolymerization silk of these tensile stresses is suitable for directly using as yarn, the particularly crucial product of dying yarn uses.As be suitable for the knitwear of swimsuit.Hang down RV copolymer silk tensile stress greater than about 1.4g/d, percentage elongation (E _b) about 45～65%, this silk is suitable for direct application, and the stretching or the heat that promptly do not need to add are adjusted.

In other words, be about 50 to locate in the RV value, there is wonderful counter-rotating in its properties, promptly with respect to N66, N6,66 low tensile stress advantages are to begin to occur in herein in the silk that is spun at a high speed.Under specific spinning speed and polymer RV condition, the degree that tensile stress reduces increases with the amount of mixing nylon 6 monomers.Greater than about 8～10% (weight) then not as the actual approach that further reduces tensile stress (remove and often can solve the manufacturing difficult problem that extrusion is removed nylon 6 steam).

Fig. 5 has drawn under the different spinning speeds, the various combination of low tensile stress and high-elongation.To specific spinning speed, by N6 → N66 → N6,66 percentage elongation increase; Correspondingly to specific spinning speed, by N6 → N66 → N6,66, the RV scope is 50～80, its tensile stress reduces.To N6 of the present invention, 66, under the specific spinning speed, the combination of high-elongation and low tensile stress has improved spinning production capacity (PS), and with the product representation of spinning speed (V) with feed yarns residual stretch ratio (RDR), wherein RDR passes through by formula ((100+E _b)/100) definition, i.e. P _S=V * RDR adds a small amount of nylon 6 and obtains improved spinning production capacity (P _S), be expressed as P _S＞8000, DT is about 0.8～1.2g/d, and roughly less than expression formula ((V * RDR)/5000～0.8) (representing as setback line ABC among Fig. 6).

When Fig. 4～6 are considered together, know very much N6,66 polymer are given novel silk tensile stress (DT) (less than about 1.2g/d) and percentage elongation (E _b) better coordination performance between (greater than about 70%), preferably, DT lower limit (g/d)＞(140/E _b)-0.8, shown in Figure 22 area I (ABDE), above-mentioned performance is to realize by following condition; It is about 50 that spinning under greater than 4500mpm speed, the RV value of this polymer are at least, and to contain be nylon 6 monomers of about 2～8% weight on a small quantity.Embodiment 2 shows, the effect of the careful processing conditions of selecting, and as Tp, spinning plate spinneret orifice D, L/D, L/D ⁴And quench step, to N6 and N66 homopolymers feed yarns, when the low value of considering its higher tensile stress influenced, higher tensile stress had hindered N6 and N66 homopolymers feed yarns to be stretched to needed residue percentage elongation fully, promptly less than about 35%, preferably about 30% or littler.

As deformation processing relatively in (embodiment 4-9) pointed N6 of the present invention, 66 feed yarns obtain lower shroud distortion tensile stress (σ usually ₁), σ ₁Little variation to the distortion extensibility is not too responsive, that is, (MD, T) lower, feed yarns has similar thermodynamic behavior to the distortion stretch modulus, will discuss in embodiment 16.

Embodiment 10

This routine crimping by stretching distortion feed yarns obtains copolyamide fibre by nylon 66 polymer manufacture through 2-methyl pentamethylene diamine (MPMD) modification, here refer to Me5-6,66, wherein 2-methyl-pentamethylene adipamide (unit by MPMD and adipic acid form is called Me5-6 later on) concentration range is 5～35% (weight).The same with nylon 6 monomers, Me5-6 in the polymer can form improve nylon 66 copolyamides of hydrogen bond structure of hydrogen bond with nylon 66 polymer, it can provide the silk of low tensile stress (DT), this silk be in speed greater than about 4500mpm, carry out spinning by the copolymer of RV50～80 and form.Me5-6 makes copolymer fusing point (Tm) reduce the Me5-6 of about 1 ℃/per 1% weight; For example, about 262 ℃ of nylon 66 homopolymers Tm, and 10/90Me5-6,66 copolymer Tm are about 253 ℃, 40/60Me5-6,66 copolymer Tm are approximately 221 ℃; Therefore, it is desirable to reduce spinning temperature (Tp) and keep spinning temperature (Tp) higher about 20 ℃～60 ℃, be i.e. Tp-Tm:20～60 ℃ than copolymer Tm.When spinning 5/95Me5-6,66 o'clock, used Tp was 290 ℃, and when spinning 35/65Me5-6,66 o'clock, used Tp was 275 ℃.

In the Table VIII, summed up the spinning and the performance data of silk.Spinning employing 5%, 10%, 20% and 35%Me5-6, the spinning speed scope is 4500～5900mpm, copolymer contains 0.3%TiO ₂, the RV value is about 40～70.To containing 5%, 10%, 20% and the copolymer of 35%Me5-6, starting polymer RV is approximately respectively 46.5,39.3,33.1 and 35.0.13 monofilament yarns of nominal 53 DENIER high-speed tensile deformation under about 0.45%FOY and 12.5cm crossing condition spins.If prepare after these MPMD POY spinning as stretching radially feed yarns, should use higher FOY and intersection level so, monofilament is 0.254mm by diameter, the L/D value is that 1.9 spinning plate spinneret orifice is extruded, blow into capable quenching with the air at room temperature of relative humidity 75% with the speed crosswind of 18mpm then and handle, relend and help the terminal upper oil-pan of metering in 135cm place boundling.Similar N6,66 copolymers, Me5-6,66 copolymers obtain lower tensile stress than 66 copolymers, and special (giving) decided polymer RV and spinning speed.(Figure 4 and 5 and Figure 11 and 13 are relatively).By similar mode, when polymer RV was increased to the 70RV left and right sides, the tensile stress of Me5-6 improved 66 reduced.Further reduce (seeing Figure 11 and Figure 13) when increasing the Me5-6 tensile stress.Yet it is improved 66 to be different from nylon 6, Me5-6 improved 66 in addition at polymer RV less than 50 o'clock, also lower tensile stress (comparison diagram 4 and 11) than 66 homopolymers tools.Can find that from Figure 11 in the RV scope be on about 60～80, nylon 6 improved 66 obtains lower tensile stress than 5%Me5-6 improved 66.And at RV less than about 60 o'clock, the latter's tensile stress is low.If it is about 10% that the amount of Me5-6 is increased to, then in whole RV research range (about 40～70), its tensile stress is reduced to also lower than nylon 6 improved 66.

Even be higher than at 65RV at the tensile stress of 55RV for Me5-6, to be out of shape be favourable but higher tensile stress combined with low silk RV.After having been found that high RV homopolymers and copolymer silk were stored respectively 120 days and 90 days, the oligomeric deposition problems appears.Creel thread guide surface take place the oligomer deposition can cause creel induce distortion tension force to increase and finally cause deformation properties degenerate (damage) deposition occurs and increase with silk RV and copolymer content.Become textured filament in the production time at normal feed yarns, can not observe deposition problems, if but need to preserve about more than 60 days the time before the distortion, contrast with 60～70RV, (about 50～60RV) spinning are more favourable, and the adjusting processing variable method of discussing by routine II is so that make tensile stress reach minimum when low RV value with low slightly RV silk.Improved 66 copolymers of Me5-6 can provide lower tensile stress in lower RV scope 50～60, therefore than nylon 6 improved 66 copolymer tool superiority, so when needs hanged down the RV silk, improved 66 copolymers of Me5-6 were better.

Among Figure 12, percentage elongation (E _b) silk RV is drawn, comprise that 5%, 10%, 35% Me5-6 copolymer and 6,66 is made comparisons.The RV scope is 45～70 o'clock, and the percentage elongation of 5%Me5-6 copolymer is greater than 6,66, and the percentage elongation that contains 5% above Me5-6 copolymer is less than 6,66.Minimum stretch tension force (DT) min of Me5-6 copolymer and corresponding percentage elongation (Eb) are mapped to spinning speed among Figure 13.Can observe percentage elongation (Eb) from Figure 13 and reduce with the Me5-6 increase, corresponding (DT) min also reduces, and content is very similar above (DT) min of 10% copolymer.For Me5-6, low tensile stress and obtained than N6 and the big spinning production capacity of N66 homopolymers than the combination of low elongation, but equal or be slightly smaller than N6,66 copolymers (comparison diagram 6 and 14) when RV when reaching the RV of minimum stretch tension force (DT) min, although the production capacity that provides is lower, but, still utilize the combination of low tensile stress and low RV silk in order to reduce oligomer deposition trend.Selection is suitable for the high-quality feed yarns of distortion at a high speed, must consider low tensile stress, high-elongation, the combination between spinning production capacity and the oligomer deposition.Preferably combination will be depended on, as the type of Texturing Machines thread-carrier, and panel surface and preceding resting period of distortion etc.Use spinning oil, it takes place to stop (inhibition) oligomer deposition as wet composition barrier, can use finish so that use higher RV polymer and optimize spinning production capacity.

Embodiment 11

The Me5-6 of 66.4RV in this example, 66 copolymers contain Me5-65%, TiO ₂0.3%, spinning obtains nominal DENIER 51 under the 5300mpm, 13 knitting welt feed yarns of monofilament, its tensile stress 1.10g/d, boil about 4% (the routine VIII-9) of contraction (BOS), this polymer and nominal dawn, several 50,13 knitting welts of monofilament correspondingly carried out deformation ratio with feed yarns, and the latter is for containing 0.3%TiO ₂, the homopolymers of 65RV, spinning obtains the 1.28g/d tensile stress under 5300mpm.Feed yarns is out of shape with Barmag FK6-L10 (warp architecture) machine, and this machine is furnished with 3-4-1CPU dish ventilation unit, and velocity interval (800～1000mpm), temperature (200～240 ℃), D/Y value (2.290～2.620), TDRs (1.318～1.378).Shroud distortional stress (the σ that surveys ₁) represent (T with gram/every stretching DENIER ₁/ former dawn number * the TDR that do not stretch), bulkiness adopts Lawson-Hemphill TYT to measure after balance, and it is a constant to the time.

The production method of silk of the present invention and product data always are listed among the Table VI A.The contrast feed yarns be summarized in Table VI B wherein sample with letter C representative contrast silk.Me5-6,66 feed yarns have low σ in whole deformation condition scope ₁Value makes it to be stretched to higher draw ratio and obtains moderate finite deformation production capacity.At same deformation velocity, temperature and similar σ ₁Under the value, copolymer and homopolymers textured yarn have essentially identical TYT bulkiness; As in expecting, the TYT bulkiness is with high σ ₁Value, temperature and increase increase with speed and reduce; Yet, Me5-6, the bulkiness of N66 silk (promptly reduces T when increasing D/Y ₂/ T ₁Value) than the time big variation do not take place.The bulkiness of N66 homopolymers silk increases with the D/Y value and reduces, and it has limited and use N66 homopolymerization feed yarns in the fair speed distortion.Feed yarns and textured filament all boil, and boil the total xeothermic typing in back and shrink less than 8%, and the copolymer textured filament is compared with the homopolymers textured filament, and the former BOS is high slightly, and DHS is similar.

Embodiment 12

In this example, the Me5-6 of nominal 61RV, 66 feed yarns contain Me5-635%, spinning under the 5300mpm, 12.3% boil shrinkage factor (routine VIII-58), this goes up distortion at the Barmag FK6L-10 machine (warp architecture) of being furnished with 3-4-1CPU dish ventilation unit, 900mpm, 210 ℃, D/Y value 2.39, TDR1.328X, 7.5% is excessive.Distortion Me5-6, the BOS that the N66 silk has is 15%, boiling the total xeothermic typing shrinkage factor in back is 12.8% (HSS/ABO).It is much higher than the N66 homopolymers feed yarns (I-11C) with the similarity condition distortion, the latter boils shrinkage factor 4.7%, boiling the total dry-hot shrinkage in back is 5.7%, what is interesting is, the Me5-6 of these high BOS distortion, measure by Lawson-HemphillTYT for 66, it has the DHS that is equal to 66 of nylon of distortion, is almost 4%.Distortion Me5-6, the higher shrinkage factor of N66 silk makes its bulk yarn be particularly suitable for doing resilient bag core FANCY YARNS.Before the distortion, the height of many merging and the Me5-6 of low-shrinkage, 66 (that is, with the low-shrinkage demonstration, routine VIII-58 is a high shrinkage among the routine VIII-9) can provide and mix the textured filament that shrinks usefulness.

Embodiment 13

In this example, to N6 of the present invention, 66 copolymer textured filaments and N66 homopolymers textured filament contrast silk are measured the influence of boiling back (promptly curl and represent and the delay of curling) tension force.Copolymer and homopolymers feed yarns among example II-9 and the I-11C are out of shape on Barmag FK6-L10, and it is furnished with the 3-4-1CPU ventilation unit, and speed is 900mpm, and 210 ℃, TDR is 1.333X, and the D/Y value is 2.24.As described in EXAMPLE IV, before bulkiness did not change in conditioning period, textured filament was stable always to the textured filament package.This textured filament is reeled agglomerating then, and no tension force is loose 24 hours under the condition of control 50%RH and 21 ℃, and be divided into three groups (A, B, C); The A group is boiled by the step that description is suitable for BOS; The B group imposes pretension and boils after 24 hours again under the 0.5g/d load; C organizes after boiling with 0.5g/d load post processing 12 hours.B group and C group are in the dyeing and arrangement of textured yarns clothes, and tension force influence during bulk development is handled and bulk development act on bulk delay tension force afterwards to influence two aspects all similar.Test and contrast silk final lengths change (shrinkage factor) and are: the test silk; A group-4.0%, B group-4.4%, C group-1.5%; Contrast silk: A group-3.0%, B group-1.9%, C group-1.0%.Textured filament of the present invention is owing to pretension is handled and the loss of essentially no bulk outward appearance, because post processing has then reduced bulk outward appearance loss.With control group N66 homopolymers silk Comparatively speaking, according to ChamberlinUS.4,583,357 6 of disclosed distortion nylon have bigger crimp loss, are unexpected to the The above results of nylon 6,66 copolymer silks.

Embodiment 14

Example 1 shown, to N6, and 66 copolymers, when RV was lower than about 50～50 polymer RV value and reduces, its tensile stress increased sharply.The bright small amount of trifunctional of this illustration group amine (three of 0.037% weight, the 2-aminoethyl) (TREN) reduced tensile stress at high RV place, but it reduces tension force at low RV scope 40～45 places and has just more effectively obtained the better coordination (balance) of tensile stress when hanging down the RV polymer, thereby has reduced the oligomer deposition.N6,66 copolymers improve with 0.037% 3-2-aminoethyl, and RV is 48.8 and 60.3, under 5300mpm, utilize L/D=1.9, diameter is a 0.254mm spinning plate spinneret orifice, carry out spinning, 75%RH, 21 ℃ of air in 290 ℃, with the quenching of 18mpm flow velocity, again with the terminal upper oil-pan of metering at 135cm place boundling, make several 13 woven monofilament welt feed yarns of 50 dawn of nominal thus, its tensile stress is respectively 0.94 and 0.98g/d, percentage elongation is respectively 85.1% and 87.6%.

Embodiment 15

This example is N6 relatively, 66 copolymers and N66 homopolymers (seeing Table the method and the performance data of IX row), the influence of spinning density, i.e. FSD (per unit is extruded the quantity of newly extruding silk on the area).Corresponding to whenever extruding 7～34 monofilament, the continuous yarn spinning density range is at 0.18mm ²～0.91/m ²Change, tensile stress increases with continuous yarn spinning density (FSD).This behavior is consistent with the present invention, promptly these (seeing Table II and X) hurried coolings has been increased elongational viscosity (η E) and has reduced tensile stress.For making tensile stress reach minimum, continuous yarn spinning density (FSD) preferably is less than about 0.5/mm ²If because machinery equipment limits and can not realize, then, hang down the quench air temperature preferably by higher airflow, and lead-in mode, promptly cool off air and just be positioned at and newly extrude silk below (being less than 10cm from spinning plate surface meter), these integrated processes are to increase quenching speed.

Embodiment 16

The macroscopic property of example 16 feed yarns is a feature with " heat " stress one strain character, is expressed as tensile stress σ _D(be defined as tensile stress (g) here and multiply by stretch rate again divided by former dawn number, i.e. gram/stretching dawn number, from room temperature to 175 ℃ with respect to stretch rate (DR).With deformation ratio shown in (example 4～9,11), N6 of the present invention, 66 feed yarns generally have lower shroud distortion tensile stress (σ ₁), σ ₁Little variation to the distortion stretch rate is not too responsive, promptly, has lower distortion stretch modulus, the macroscopic property of these feed yarns is similar, by Figure 15～18 explanations, three kinds of feed yarns (routine 11C, the about 3300mpm spinning of II-9 and commercial 45RVPOY forms) always list in the Table V, be respectively fund V-1, V-2, V-3.

Figure 15 is tensile stress (σ _D) be expressed as gram/stretching dawn number, to the representative graph that stretch rate is painted, get 20 ℃ of temperature, 75 ℃, 125 ℃ and 175 ℃, more than the yield point (flow point), tensile stress (σ _D) increase with stretch rate is linear, slope is called stretch modulus (M _D), be defined as (△ M _D/ △ DR).When draft temperature (TD) rises, tensile stress (σ _D) and stretch modulus (MD) value reduce.

Figure 16 is relatively at 75 ℃, to different feed yarns (A=nominal 65RV nylon 66 copolymers, the spinning of 5300mpm speed, routine I-11C; B=nominal 68RV nylon 6,66 copolymers, the spinning of 5300mpm speed, routine II-9; C=nominal 45RV nylon 66 copolymers, the spinning of 3300mpm speed), tensile stress (σ _D) to the relation of stretch rate (DR).Required tensile stress (σ _D) and the value of stretch modulus (MD) by feed yarns type and draft temperature (T _D) selection control.Tensile stress (the σ of preferred stretching feed yarns _D) approximately be 1.0～1.9g/d, stretch modulus (MD) approximately is 3.5～6.5g/d, measuring condition: 75 ℃ of stretch rates (DR) are 1.35, are selected from tensile stress σ _DOnly linear point to stretch rate.Select 75 ℃ to be because most of nylon spun orientation feed yarns reach maximum contraction rate but tangible recrystallization can not take place (promptly at this moment, before adopting recrystallization to improve, lattice on glass transition temperature Tg the time, the engineering properties of symbolistic " just spinning " polymer chain lattice is arranged more here).

Figure 17 is silk B among Figure 16, with stretch modulus logarithm value l _n(M _D) to (1000/ (T _D, ℃+273)) representative diagram of being painted.The slope of optimum linear relationship is as apparent tensile energy (E among Figure 22 _{D, A}), suppose that the Arrhenius type depends on M _DAnd temperature (that is M, _D=Aexp (E _D/ RT), wherein T is a Kelvin, R is a universal gas constant, A is a material constant), the performance energy (E of the feed yarns that preferably stretches _DA(E _D/ R=△ (l _nM _D)/△ (1000/TD), wherein TD is a Kelvin), approximately be between 0.2～0.5 (g/d) ° K.

Embodiment 17

Find from embodiment 1,2,3 and 15, RV and spinning speed to particular polymers, carefully select and control melt and tensile viscosity separately and can make tensile stress reach minimum, clearly should be applied to originally improving one's methods in the high RV homopolymers of N66 herein, and compare improvement effect.In the Table X, except that spinning speed was fixed as 5300mpm, tensile stress (DT) was measured different processing conditions.With the same shown in the example 2, the corresponding DT of N66 homopolymers is similar to N6, and 66 copolymers, but under optimum processing conditions, the tensile stress of N66 homopolymers (DT) are than N6,66 copolymerization object heights 10～15%.If because some makes limitation and can not use N6,66 copolymers just can be used by careful selection and control melt and tensile viscosity by improved N66 homopolymers feed yarns such as Chamberlin so; That is, about 290～300 ℃ of polymer-extruded temperature, spinning plate orifice diameter (D) is preferably less than about 0.23mm less than about 0.30mm.L/D is greater than about 2.0, more preferably greater than about 3, so L/D ⁴Greater than 100mm ^-3About, more preferably greater than 150mm ^-3About.Spinning plate is extruded the number of filaments of area less than about 0.5 monofilament/mm ²Quenching humid air relative humidity (RH) is at least 50%, temperature is less than 30 ℃, typically is 75%RH and 21 ℃, flow velocity greater than 10mpm about, more preferably greater than about 15mpm, distance is at least 75cm, is preferably about 100cm, through a metering terminal upper oil-pan thread guide (also can claim buncher below above), between about 75～150cm, be preferably between 75～125cm the silk boundling.In the step from the starting polymer to the finished silk, increase the tensile stress that RV can further reduce silk; For example part increases RV through SPP, extrudes water conservancy diversion by melt subsequently again and finishes.Melt is extruded in the water conservancy diversion, and RV is increased to 15 from 5, and tensile stress reduces about 5%.Make up these preferred processing conditions, can make N66 homopolymers feed yarns at spinning speed during greatly about 5000～6000mpm, its tensile stress is less than 1.2g/d.

In addition, to specific spinning speed, by improving percentage elongation (E _b), the improved melt extrusion method of the present invention is applied to high RV nylon 66 homopolymers under the high spinning speed, reached the effect of increase spinning production capacity (Ps).Figure 21 is seen in this improvement to prior art, and its center line A and B are US4 such as Chamberlin, comparative group in 583,357 example II and test cocainine.RV is respectively 40 and 80, and line C is as herein described improving one's methods, and proves that the present invention has significant improvement to Chemberlin etc.

Embodiment 18

The thermophysical property of feeding yarn is represented with shrinkage factor with to the elongation property of temperature, utilize Du Pont hot physical analystical instrument (TMA) to measure, and Figure 18 to 20 has illustrated representative character.

Figure 18 (line A) is under the constant pulling force of 300 milligrams/initial DENIER, uses the constant rate of heat addition of 50 ℃/min (± 0.1 ℃), and the length of the resulting nylon feeding yarn of drawing with classical way is to the percentage variation diagram of temperature.Extend and under vitrification point (Tg), begin appearance greatly, and in temperature T _IIIncrease down sharply, we believe, L and hydrogen bond begin the to rupture kinetic temperature of the elongation of permission polymer chain and wafer is relevant.

Figure 18 (line B) is the dynamic percentage elongation plot corresponding to line A, and in this expression is the every Celsius temperature of the line A transient change that changes the length that causes (△ length, %/△ temperature, ℃).Tg and T _{II, L}Between dynamic percentage elongation be more constant, and be T in temperature _{II, *}The time (between about 100-150 ℃) increase to first maximum, this temperature with the beginning crystallization relevant.In temperature is T _{II, *}To T _{II, U}Dynamic percentage elongation remains essentially in one than on the higher level in the scope, is beginning the crystal melting temperature T relevant with lightization with yarn then _{II, U}Increase suddenly down, up to yarn till fracture under the temperature that generally is lower than fusing point (Tm).T _{II, U}Generally little 20 to 40 ℃ than fusing point Tm.Most of fatty polyamides show the dynamic percentage elongation characteristic to temperature of outlet B, at first maximum temperature T _{II, L}After, dynamically percentage elongation has small reduction, reaches minimum temperature T _{II, * *}, this temperature is usually elected Bu Ruier (Brill) temperature as and with relevant to the transformation of the bigger alpha crystalline form of heat endurance by the less beta crystal of heat endurance for nylon 66 polyamide.

What Figure 19 represented is to change pulling force (also optional tension force σ down in a constant rate of heat addition 50 ℃ (± 0.1 ℃), represent every original DENIER the milligram number) by 3mg/denier to 500mg/denier resulting nylon feeding yarn temperature and length variations percentage (△ length, schematic diagram %).Yarn extends down at the pulling force greater than about 50mg/d (Figure 19, the first half), and shrinks down at the pulling force less than about 50mg/d (Figure 19, Lower Half).The length transient change of relative temperature under given pulling force ((△ length, %)/(the △ temperature, ℃)) conduct under pinch condition " dynamically shrinkage factor ", conduct under the extension condition " dynamically percentage elongation ".Preferred feeding yarn used in the present invention shrinks under 40 ℃ to 135 ℃ the temperature at initial tension force 5mg/d, and this temperature is near the temperature (T of vitrification point (Tg) and beginning crystallization _{II, *}); And under same condition, has minus dynamic shrinkage factor (that is, shrink increase and after initial contraction, do not demonstrate any natural extension) with temperature.

Figure 19 be the nylon feeding yarn under 50 to 500mg/d tension force, the dynamic percentage elongation schematic diagram of relative temperature.Dynamically the original maximum of percentage elongation is as the beginning of main crystallization and temperature T occurs _{II, *}

Figure 20 is that ((△ length, %)/(△ temperature, ℃) max) is to the schematic diagram of initial tensile force/every initial DENIER (or tension force) for the initial dynamically maximum of percentage elongation; (△ L/ △ T) max such as positive slope d (△ L/ △ T) max/d σ value also increases along with the increase of stress, and d (△ L/ △ T) d σ value is general along with the increase of polymer relative viscosity and the increase of spinning speed (i.e. (RDR) _SMinimizing) and reduce.The feature of preferred feeding yarn used in the present invention is to be 300mg/d at stress, (△ L/ △ T) max value is about 0.05～0.15%/℃, and d (△ L/ △ T)/d σ value is 2 * 10 at tension force during for 300mg/d ^-4～7 * 10 ^-4(%/℃)/(mg/d).

Embodiment 19

In embodiment 19, yarn (routine XI-2) that the present invention's (routine XI-1) representative nylon 6,66 yarns, nylon 66 homopolymers high-speed spinnings are made and low RV low speed spin made yarn (routine XI-3) and are compared in Table X I.Yarn of the present invention has less crystalline solid and less crystallite dimension is arranged than corresponding nylon 66 homopolymers yarns.The crystalline phase of yarn of the present invention be it seems more even, the 50%th, because higher fusion speed (DSC), the 50%th, because narrower NMR scope.Lower average molecular orientation (birefringence method) and more uniform crystalline phase (DSC, NMR) can be explained their lower sonic modulus.As what reckoned with, copolymerization yarn of the present invention is smaller a little than the size heat endurance of nylon 66 homopolymerization yarns, but analogous dynamic contraction and percentage elongation are arranged when measuring with TMA, and it shows that probably the yarn that is spun at a high speed has bigger crystalline size.Yarn of the present invention has comparable dyeing power performance in the time of 80 ℃, but dyeing rate is slow unexpectedly in the time of 40 ℃～60 ℃.Yet yarn bulk dyeing rate of the present invention (MBB) is bigger.Above-mentioned reason makes yarn of the present invention to dye with nylon 66 homopolymerization yarns by adjusting the dye bath temperature.When adopting less drafting stress, drawing-off coefficient and tensile energy to measure, yarn of the present invention has bigger elongation ability, can be used to explain that in conjunction with the lower 1000+mpm coefficient of torsion yarn of the present invention compares with the yarn of prior art good spinnability is arranged.

The measurement Jennings of polyamide relative viscosity is on 1 page of hurdle 2 of U.S.4702875, and 42-51 is capable to be described.

The amount (representing with N6% in the table) of nylon 6 monomers in the nylon 66 is determined by following method: the nylon samples that weighs up weight is hydrolyzed (by the contact that refluxes) in the HCl of 6N, add the standard of 4-aminobutyric acid as an inherence then.Sample is dried and carboxylic end group is methylated (with the 3N HCl of absolute methanol), and with the trifluoacetic anhydride/CH of 1/1 volume ratio ₂Cl ₂Come trifluoro acylated amine end group.Behind solvent evaporated and the excessive reagent, residue is added into methyl alcohol and carries out chromatography with gas-chromatography such as Hewlett Packard5710A, can utilize Hewlett Packard Co., Palo Alto, CA has the product of flame ionisation detector, uses Supelco ^RPillar, 6 feet * 4 millimeters internal diameters are used 10%SP2100on80/100 Supelcoport ^R, can be from Supelco company, Bellefonte, PA purchases.Many gas chromatographs, post and carrier all can be used for this measurement.The 6-aminocaprolc acid peak value of deriving compares the milligram number that converts nylon 6 by calibration curve to the area of the 4-aminobutyric acid peak value of deriving, and calculates the percentage by weight of nylon 6 then.

Determining of the amount of Me5-6 monomer by heating laminar, the film shape of 2 grams, fibrous or other shape (surfacing, be removed as finishing agent) polymer spend the night, heating is to contain in the solution of 20 milliliters of concentrated hydrochloric acids and 5 ml waters one, carries out under 100 ℃ the condition.With the solution cool to room temperature, adipic acid is precipitated out and can be removed then.If (have TiO ₂, should filter or centrifugation.) the NaOH aqueous solution neutralization of this solution of 1ml and 1ml33%.The 1ml acetonitrile is joined in the solution after the neutralization, shake this mixture, form two-phase.Diamine (MPMD and HMD) top mutually in.Use capillary gas chromatography, as have 30 Miho Dockyard B-5 posts (95% dimethyl polysiloxane/5% diphenyl polysiloxanes) and analyze 1 milliliter top phase solution.Other pillar and carrier can also be used for this measurement.Suitable temperature program(me) is 100 ℃, and to continue 4 minutes be to rise to 250 ℃ under the 8 ℃/min in the rate of heat addition then.Diamine flowed out from pillar in about 5 minutes, and MPMD at first flows out.The percentage of Me5-6 is calculated by the ratio of the integral area under MPMD and the HMD peak, and in this application as the 2-methyl isophthalic acid, 5-pentylidene adipamide shared percentage by weight in polymer.

Measure the DENIER number of yarn according to ASTM D1907-80.Measure the DENIER number by means of automatically cutting off weighing-appliance, in U.S.408434, describe as Goodrich etc.

Press Li at U.S.4521484, COL.2,1.61 to COL.3, and tensile property (intensity, elongation (E are measured in 1.6 description _b%), modulus).Modulus (M) often is called " initial modulus ", when Y-axis is a pulling force, X-axis for elongation load extension curve first suitably the slope of straight part promptly be.Secant modulus when elongating 5% (M5) is defined as the ratio of (intensity/0.05) * 100, and intensity is at the measured value that elongates at 5% o'clock here.

Add thermal measurement TENSILE STRENGTH (DT33%) in the time of tension test, represent with gram/every initial DENIER.This test operation is very convenient, superficial velocity with 180 meters of approximate per minutes is passed through yarn from one group of roller, and by garden shape heat pipe, 185 ± 2 ℃ (acceleration temperature of high-speed spinning outlet), 1 meter long yarn channel of 1.3cm diameter is arranged, deliver to second group of roller then, this group roller rotates than the fast so that yarn draw ratio with 1.33 times between roller of first group of roller and stretches.Conventional tensometer is placed between heat pipe and the first group of roller to measure the tension force of yarn.The variation of coefficient is determined by duplicate reading statistics ground.The new yarn that just has been spun into need wait 24 hours and do this measurement again.Except elongating than replacing 185 ℃ by 1.33 times of 1.05 times of replacements and heat pipe temperature by 135 ℃, Ce Liang @1.05 elongates the TENSILE STRENGTH than (DT5%) in the same way.Utilize these devices, calculate average secant modulus (M by following formula ₅)

(mean value is represented by bracket) M ₅The also available the method for variation percentage obtain.

It is that 5% same mode is measured to resemble DT also that @1.00 elongates than the intensity of (being called as critical contraction elongates), just will elongate than becoming 1.00 times to become 75 ℃ with heat pipe temperature.

Residue is elongated than the pulling force for (DT RDR=1.2) and is recorded in the mode identical with DT5, just elongates than elongating ratio based on 1.20 times residue.That is:

Utilize all right design factor percentage change of these data.

Utilize KE-2L type Kanebo tension measuring device to measure dynamic shrink tension (ST), this measuring instrument is located at that the Toyomenka.America Co., Ltd of Charlotte of North Carolina by Osaka, Japan Kanebo Engineering Co., Ltd and branch and makes.7 centimetres yarn sample is formed the yarn circle, and fixed between two yarn circles, be used for measuring the value of tension force (g) relative temperature, condition is initially to give 5 milligrams/DENIER of application of load, is heated to 260 ℃ from room temperature with 30 ℃/minute speed.Maximum shrink tension (g/d) (S _Tmax) and at S _TmaxThe place uses TS _TmaxThe temperature of expression goes on record.Other thermal change also can detected (seeing going through of Figure 10).

The distance to go that yarn is caused by the increase (△ T) of temperature under a prestretching load changes (△ L) to be measured with Du Pont hot physical analystical instrument (TMA), uses 2940 types, E.I.Du Pont de Nemours and Co., Inc.ofWilmington, Delaware.12.5 the yarn of millimeters long measured it to temperature (degree centigrade) length variations, it: 1) placed carefully between the aluminium ball of two interference fits, keep all yarns to stretch with unstressed simultaneously, yarn is in ball external hot melting cut end, and is fixing to avoid the slippage of monofilament with the micro welding device; 2) measure with the initial load at 5mg/ dawn and shrink, measure extension with the 300mg/ dawn; 3) with 35 ℃ length as initial length, be heated to 300 degrees centigrade with the speed of per minute 50 degree by room temperature.(△ L %) and make digital record, maps to probe temperature then to measure length variations per two seconds (that is, every 1.7 ℃).Can determine average relation by at least 3 representative figure.Preferably radially the drawing-off feeding yarn is at 5mg/d, and temperature range has negative length variations (, the contraction of yarn) when being 40 ℃ to 135 ℃.

Length is to transient change (the △ L of temperature, %)/(△ T, ℃), (5mg/d) is called as dynamic shrinkage factor under pinch condition, (300mg/d) is called as dynamic percentage elongation under the extension condition, can be obtained by the average computation of floating and again probe temperature mapped by initial data.Preferred warp-wise elongates feeding yarn and have negative dynamic shrinkage factor (that is, yarn does not extend) in 40 ℃ to 135 ℃ temperature range after initial contraction.The value of (300mg/d preload) (△ L/ △ T) is found along with the increase of temperature and increases under the extension condition, maximum temperature values in the middle of arriving is about 110 to 140 ℃, its value reduces a little in the time of about 160-200 ℃, sharply increases (see figure 7) when beginning to soften then before the yarn fusing.The intermediate maximum that appears at (△ L/ △ T) between about 110 ℃-140 ℃ is called as (△ L/ △ T) max and is used as the measurement of the flowability of polymerization reticulated under pulling force and high temperature.Preferred warp-wise elongates feeding yarn one (△ L/ △ T) _MaxValue is measured under 300mg/d, less than about 0.2 (%/℃), preferably less than about 0.15 (%/℃) and greater than about 0.15%/℃.

Another key property of polymer mesh fabric be it (△ L/ △ T) _MaxThe sensitiveness that value increases tension force, tension force is defined as (△ L/ △ T) herein _MaxTo the figure of σ D at σ _DValue for the tangent at 300mg/d place (with d (△ L/ △ T) max/d σ _DExpression), can get to the sample determination of 500mg/d by 3mg/d pretension independently and be worth (seeing Fig. 5 and 6).Selecting the 300mg/d tension value is owing to its suitable tension level (that is, between Fig. 2 middle roller 17 and 18) near the loose district of warp-wise drawing-off.

Relatively the hot-stretch stress of stress strain curve is used to simulate the drawing-off feeding yarn to radially draw ratio (WDR) and drawing temperature (T _D) response that increases.Drafting tension (σ _D) measurement and DT33% identical, just yarn speed reduces to 50 meters of per minutes, measures and carries out 100 meters long, and resemble and utilize different temperature and draw ratio described.Drafting tension (σ D) was represented with the gram/drawing-off dawn; That is σ, _D=DT (g/d) * DR, and when 75 ℃, 125 ℃ and 175 ℃ counter extensioin than (DR) mapping (seeing Figure 20).Drafting tension (σ _D) in the DR value greater than about 1.05 (that is, at this more than scope point) to beginning to occur strain hardening (that is residual percentage elongation (RDR), _DBe about 1.25) the interior increase linearly of this segment limit along with draw ratio, tensile stress is called as drawing coefficient (MD=△ σ to the slope of the optimal linear graph of draw ratio _D/ △ DR).Tensile stress (σ _D) value and drawing coefficient (M _D) along with draft temperature (T _D) increase and reduce.By selecting the type and the draft temperature (T of feeding yarn _D) can be with tensile stress (σ _D) and drawing coefficient (M _D) be controlled at desired horizontal.Tensile stress (the σ that preferred stretching feeding yarn has _D) about 1.0 and about 20g/d between, drawing coefficient (M _D) between about 3 to about 7g/d, this is measured under 75 ℃, and is to take from an optimal tensile stress σ _DTo being 1.35 places at draw ratio (DR) in the linear graph (seeing Figure 20 and 21) of draw ratio.Select 75 ℃ to be because the feeding yarn that is suitable for weaving that we find most of nylon has reached their maximum collapse tension force but also do not begun to stand important recrystallization process (promptly, before reticulated was by hot recrystallization sex change, this can more express the physical characteristic of polymer chain reticulated when being higher than its vitrification point (Tg) that is spun into).

Apparent drawing-off energy (E _D) a is the speed that the drawing-off modulus reduces along with the increase of temperature (75 ℃, 125 ℃, 175 ℃), it is defined as the logarithm ln (MD) and (1000/ (TD of drawing-off modulus, ℃+273)) the slope of figure, suppose to become Arrhenius (Arrhenius) type relation (that is M, with temperature _D=Aexp (ED/RT), wherein T is Kelvin's number of degrees, and R is a universal gas constant, and " A " is material constant.The apparent drawing-off energy (E that preferred drawing-off feeding yarn has _D) a (=E _D/ R=△ (l _nM _D)/△ (1000/TD), wherein T _DBe Kelvin's number of degrees) be about 0.2 to about 0.6 (g/d) ° K.

Dyestuff difference variance is to be used to measure the radially uniformity of the final dyeing of stretched yarn, be defined as to weave on the soft footwear to dye according to MBB staining procedure described herein in U.S. state, axially and the footpath upwards measure the variance difference of K/S respectively.The LMDR of knitting radially is found with the dyestuff difference variance of stretched yarn radially and is inversely proportional to (axially K/S variance---radially K/S variance).Radially drafting process of the present invention and drawing temperature, drawing-off degree, loose temperature and loose degree compare to reduce the radially dyestuff difference variance (DDV) of stretched yarn product.

The measurement that boiling water shrinks (BOS) is to walk to third column the 66th capable method according to the 3rd hurdle the 49th among the U.S.3772872 to carry out.The measurement of the HEAT SETTING shrinkage factor (HSS/ABO) after boiling water shrinks is a branch of test yarns to be immersed in the boiling water then it is put into a hot stove and record amount of contraction.More particularly, the counterweight (6000 DENIER circle) that hangs 500g on the test yarns bundle of 3000 DENIER is so that the power that acts on the yarn is 83mg/denier, and the length (L1) of measurement yarn bundle.Substitute the 500g counterweight with the 30g counterweight then and the yarn bundle of weighing was immersed in the boiling water 20 minutes, shift out the back air drying 20 minutes.Then the yarn bundle is hung in one 175 ℃ the stove 4 minutes, shift out, replace the 30g counterweight and measure the length (L2) of yarn bundle with the 500g counterweight." the HEAT SETTING shrinkage factor after boiling water shrinks " calculated by following formula:

HEAT SETTING shrinkage factor (HSS/ABO) after boiling water shrinks is greater than BOS, that is, this yarn is at 175 ℃ of ABO, and DHS shrinks continuously, realizes level dyeing and arrangement preferably.

Static dry-hot shrinkage (DHS90 and DHS135) is by U.S.4134882, the 11st hurdle the 11st row, and the method for describing among the 42-45 is measured, and different is that furnace temperature is 90 ℃, 135 ℃ and 175 ℃, replaces 160 ℃ respectively with these temperature.

24 hours response rates are to measure the yarn amount of the answer after 24 hour time in the past.Measuring condition is the long sample yarn of 150cm 70 ± 2 and 65 ± 2% (relative humidity) following 2 hours, make a yarn circle that is hanging by the proper supporting thing, hang a counterweight on circle, this counterweight produces the tension force of a 0.1mg/denier on the yarn circle, measure yarn circle length (L1), remove counterweight, allow yarn, so hang up identical counterweight on circle and measure the length (L2) of circle through 24 hours.

The measurement of the finishing agent of yarn (FOY) is such, and the yarn sample that will contain finishing agent places tetrachloro-ethylene, and it can remove finishing agent from yarn.The amount of the finishing agent of being removed from the yarn is determined tetrachloro-ethylene at 3.4 (2940cm-1) by infrared technology.Absorptance is the measuring of all absorbable solvated compoundses in finishing agent.FOY calculates by following formula:

The finishing agent that is fit to for this new yarn is the aqueous emulsion of the composition 7.5% of following finishing agent component: about 43 portions (share of all finishing agent components is all represented with weight) coconut oil, about 22 parts contain the alcohol of 14 carbon atoms with (PO) _x/ (EO) _y/ (PO) _zCopolymer, wherein X can be 5-20 (preferred 10); Y can be that 5-20 (preferred 10) and Z can be (1-10) (preferred 1.5), the alcohol ethoxylate that contains 10 carbon atoms of about 22 parts of mixing (ethylene oxide unit of＞10mol), about 9 parts alkyl macrogol ester, about 4 parts of aliphatic acid sylvite, about 0.5 part of (alkylbenzene) 3 phosphite.This finishing agent is used for yarn by known method, and its FOY is about 0.5% level.

The level that interweaves of polyamide yarn is measured by the acupuncture technology, this technology mainly comprises and inserting a needle in the moving yarn, and measuring the point-to-point transmission length (cm) of yarn, is the pin insert division a bit, and another point is the predetermined active place of power that acts on the pin.For the yarn of＞39 DENIER, predetermined power is 15 grams; For the yarn of≤39 DENIER, predetermined power is 9 grams.Get 20 readings.For each length of point-to-point transmission, round numbers, fractions omitted is cast out data O, and this integer is got with 10 and is the Log value at the end and multiply by 10.For each of 20 readings, its results averaged and get off as the horizontal recording that interweaves.

Bulkiness of textured filament (curling) and shrinkage factor can be measured by following Lawson-Hemphill textured filament experimental rig (TYT): suitable tester is 30 types, sell by Lawson-Hemphill, Inc., P.O.Drawer 6388, Spartansburg, SC.Four yarn length sizes obtain with following order: (1) length (yarn crimp exists) (L under very little tension force ₁); (2) just be enough to the length (L of stretching yarn ₂); (3) heating makes further crooked length (yarn of being surveyed the curls) (L of yarn under low-down tension force ₃); (4) just be enough to the length (L of the final yarn of stretching yarn ₄).Curl and calculate by following formula:

Shrinkage factor is calculated by following formula

Use following test condition: 10 meters samples are long; 100 meters of sample velocities per minutes; 120 ℃ of heter temperatures; The counterweight of a 400mg is used to the calibration of yarn on first area sensor of approximate 40 DENIER, the counterweight of a 200mg is used to the yarn of approximate 20 DENIER, and the feeding roller speed in second zone is adjusted to the line tensions that produce approximate 2 grams between the feeding roller in middle and second zone, and the counterweight of one 20 gram is used on first regional sensor.

Needle plate (T before the distortion tension force ₁) and rear faller (T ₂) tension force, represent, can measure with gram/initial feeding yarn DENIER with the Rothschild electronic tension meter.The operating condition of R-1192A type is: the gage outfit of 0 to 100 gram; Range=25 (weighing shows 0 to 40 gram); Calibrate with Lawson-Hemphill tensiometer means for correcting.Rothschild tension measuring device and Lawson-Hemphill tensiometer calibrating installation are purchased commercial: Lawson-Hemphill sells, Inc., PO Drawer 6388, Spartansburg, SC.Preceding needle plate tension force (T ₁) can also use tension force σ ₁Represent σ ₁=T ₁* distortion degree of draft is (TDR) with rear faller tension force σ ₂=σ ₁* (T ₂/ T ₁).The deformation parameter that another is important, distortion drawing-off modulus, (M _TD) be variation (the △ σ of preceding needle plate stress ₁) divided by the variation of being out of shape degree of draft, △ TDR (that is M, _TD+ △ σ ₁/ △ TDR).

Dynamic drafting stress (σ _DD), represent with (drafting tension * draw ratio), in when heating, just measure yarn in drawing-off and heating.Yarn is carried out this test easily by one group of clamping roller, the clamping roller rotates with 50 meters superficial velocities of per minute, in the time of 75 ± 2 ℃, make the heat pipe with 1.3cm diameter of yarn by a garden cylindricality, 1 meter long yarn channel arrives second group of clamping roller then, and this roller initial velocity is identical with first group, then faster than first group of roller, so that yarn is elongated between two groups of rollers, in 20 seconds, by initial an elongation than 1.0X to final 1.60X.Dynamic load (gms) degree of draft curve is grown tape recording instrument record with one.Dynamic drafting stress (the σ that represents with gram/drawing-off DENIER _DD), represent that with gram/initial DENIER dynamic drafting tension (DDT) multiply by draw ratio DR (that is σ, _DD=DDT (g/d) * DR).Dynamically drawing-off modulus (MDD) is defined as variation (the △ σ of drafting stress of the change of every degree of draft (DR) _DD) (that is M, _DD=△ σ _DD/ △ DR).Dynamic σ _DDAnd M _DDMeasured when 1.35X draw ratio and 75 ℃.Select 75 ℃ be since it near the temperature of the maximum collapse tension force before the germination, and on the vitrification point again before the marked change that recrystallization causes.

Torsion modulus (M _T): the torque characteristic of fibre has certain influence to the twisting and the deformation processing ability of fibre.Torsion modulus (the M of yarn of the present invention _T) be lower than homopolymers N66 yarn for 15+%.The principle of this analysis is a torque-balance system, and sample is twisted into certain angle, and the moment that viscous liquid provided of rotating of moment that is produced and known-viscosity balances each other.The calculating of distorting stress/strain curve is by using Toray torsional rigid analyzer (modern industry limited company, Otsu, Shiga 520, Japan) the torsional twist curve measured calculates, see people such as M Okabayashi for details at textile research magazine 46 volumes, after 429 pages, the description in (1976), used sample is long to be 2.05cm, 60 circles, sampling frequency 2 seconds, the S-20 viscosity standard oil is provided by state technical school of instrument company of Panamanian Canon (Cannon).Liquid viscosity is along with the variation of temperature data are corrected, the computational methods of torsion modulus be according to W.F.Knoff at material science knowledge magazine, the 6th volume, 12 phases, the carrying out described in the 1392nd page (1987).Other the instrument that is suitable for this measurement is that the KES-Y-1-X fibre reverses tester, and by kyoto, Japan Kato technology company, limited company makes.

The measurement of the density of polyamide fabric is to utilize the density gradient column technology of standard to measure, and has wherein used carbon tetrachloride and normal heptane liquid, and temperature is 25 ℃.

Pre-arcing characterisitics comprises initial melting rate, measurement undertaken by differential scanning heat instrument (DSC) or differential thermal analyzer (DTA).There are several instruments to be suitable for this measurement.Wherein a kind of is Du Pont's thermal analyzer, and by E.I.Du Pont deNemours and Company of Wilmington, De makes.3.0 the sample of ± 0.2mg is placed in the aluminium vessel with cover, and is curled in a crimping device, these devices are provided by the instrument producer entirely.With the speed heated sample of 20 ° of per minutes, measure its fusing point (T _M), the speed that per minute is 50 ° is used to detect low-temperature transformation, because crystallization is very fast again during the heating yarn, generally cannot see this transformation.(43 milliliters of inlet velocity per minutes) carried out in heating under nitrogen environment, use the glass spherical tank that is provided by the instrument producer to cover.After the sample fusing, under nitrogen environment, determine the cooling heat release with the cooling sample velocities of 10 ° of per minutes.The fusing point of yarn of the present invention (Tm), relation as desired copolymer and homopolymers, each percentage by weight fusing point for the comonomer in the copolymer reduces about 1 ℃, yet resemble by the initial slope of fusion curve indicated, measured by first peak height of deriving, the melting rate of yarn of the present invention is than comparable yarn height nearly 50%, and this is unexpected.

The measurement of the optical parametric of fabric be according to Frankfort and Knox in U.S.4134882, the method that the 9th hurdle the 59th walks to described in the 10th hurdle the 65th row is carried out, and following special case is just arranged and replenishes.At first to replace PolaroidT-410 film and 1000X image multiplication rate, with the scanning of high speed 35mm film recording oscilloscope, with 300X magnifying power recording light wave interference pattern.Also can use the suitable electron image analytic approach that provides equifinality.The second, on the 10th hurdle, a word " than " quilt " and " of the 26th row replaces to correct misprint.Because fabric of the present invention is different with in 4134882 those, the additional parameter that is calculated by identical n ‖ and n ⊥ is distributed in ± and 0.05.Here ± to be thought of as with the fabric image be the relative both sides at center.Isotropic ± 0.05 o'clock refractive index (RISO) determine by following relationship:

RISO(0.05)＝〔(n‖)(0.05)+2(n⊥)(0.05)〕/3

The final mean value of any optical parametric is defined as the average of two values, for example at ± 0.05 o'clock:

<RISO>＝(RISO(0.05)+RISO(-0.05))/2

And also be similar for birefringence.

Crystallization is decided total index number and apparent crystallite dimension: the apparent crystallite dimension of the complete exponential sum of crystallization can be obtained by X-ray diffraction scanning.The feature of the diffracted image of the fabric of these kinds composition is a significant equator X ray reflection, and peak value appears at angle of scattering and is approximately 20 °-21 ° and 23 ° of 2 θ place.

The X-ray diffraction image of these kinds fabric can (N.J. cat.no.PW1075/00), uses a diffracted beam monochromator and a scintillation detector for Fei Lifu electronic instrument, Mahwah with reflection-type X-ray diffractometer acquisition.Intensity data can be measured with a speedometer with by a computerized data collection/decomposing system.Obtaining the used instrument of diffracted image regulates as follows:

1 ° of 2 θ of sweep speed per minute;

0.025 ° of 2 θ of stepping increment;

6 ° to 38 ° of sweep limits, 2 θ;

Pulsed height analyzer, " differential ".For both measurements of the complete exponential sum performance of crystallization crystallite dimension, diffraction data makes it to polish by a computer program, determines the position and the height at baseline and measurement peak.

Nylon 66, nylon 6 and nylon 66 are exactly the complete index of crystallization (CPI) (according to P.F.Dismore and W.O.Statton, polymer science magazine, C portion, 13 phases, 133-148 page or leaf, 1966) with the X-ray diffraction amount of the copolymer degree of crystallinity of nylon 6.Can find to change in the position at two peaks at 21 ° and 23 ° 2 θ places, and along with the increase of degree of crystallinity, peak value is further removed and near the pairing position, " ideal " position based on Bunn-Garner nylon 66 structures.The mobile basis of measuring the complete index of crystallization of nylon 66 that provides of this peak position:

Wherein d (surface) and d (inside) are Bragg ' d ' spacings, and peak value is located at 23 ° and 21 ° respectively, and denominator 0.189 is the value of d (100)/d (010), value (Proc.Royal Soc. (London) by the good nylon 66 of the crystallization that Bunn and Garner reported, A189,39,1947).An equivalence and more useful relational expression based on 2 θ values, is:

CPI=(2 θ (surface)/2 θ (inside)-1) * 546.7

Apparent crystallite dimension: the calculating of apparent crystallite dimension is the peak width at half height degree of measuring the equator diffraction maximum.Because these two equatorial peak intersect, the measurement of peak width at half height is based on half half width when high.For 20 °-21 ° peak, the position of half maximum peak height is calculated, and measured according to the low-angle side for 2 θ values of this intensity.To multiply by 2 in the difference between this 2 θ value and the 2 θ values and provide half peak (or ' line ') width in the maximum peak eminence.For 23 ° peak value, the calculating of the position of half maximum peak height, and for the measurement of 2 θ values of this intensity all at large angle side; To multiply by 2 in the difference between this 2 θ value and the 2 θ values and provide the peak width at half height degree in the maximum peak eminence.

In this measurement, a line broadening error that need rectify an instrument; All other line broadening effect all is considered to the result of crystallite dimension.If ' B ' is the measurement live width of sample, the live width of correction ' β ' is $\mathrm{\&beta;}=\sqrt{B^2-{\mathrm{<figure-callout\; id="2"\; label="b"\; filenames="A9910847900981.png,A9910847900982.png"\; state="\{\{state\}\}">b</figure-callout>}}^2}$ Wherein ' b ' is the line broadening constant of instrument.' b ' can determine at the crest line width that is approximately 28 ° of 2 θ place by the diffracted image of measuring silicon wafer powder sample.

Apparent crystallite dimension (ACS) is presented

ACS=(K λ)/(β COS θ), wherein K is taken as 1 (single)

λ is X ray wavelength (is 1.5418 at this);

β radially proofreaies and correct live width; θ is half (resembles by diffracted image and obtain half of 2 θ values of selected peak value) at Bragg angle.

The X ray orientation angle: the silk thread that a beam diameter is about 0.5mm is entangled on the specimen holder carefully, keeps silk thread substantially parallel.Silk thread in the specimen holder of piling is exposed on by Fei Lifu x ray generator (12045B type), and in the X-ray beam that is produced, this available generator comes from the Fei Lifu electronic instrument.The diffracted image of sample filaments directly exposes X-ray film (catalog number (Cat.No.) 154-2463) by KodakDEF and comes record, uses Warhus pin hole gamma camera.Parallel light tube diameter 0.64mm in the gamma camera.Process-exposed continues and carries out about 15 to 30 minutes (or general open-assembly time look and be enough to make optical density place～1.0, measured diffraction characteristic to go on record).The digitized picture of diffracted image comes record with a video frequency camera.Transmitted ray intensity is demarcated with a black and white benchmark, and grayness (0-255) converts optical density (OD) to.The diffracted image of the copolymer of nylon 66, nylon 6 and nylon 66 and nylon 6 is approximately 20 °-21 ° and 23 ° at 2 θ two outstanding equatorial reflexions; Surface (～23 ℃) reflection is used to the measurement and positioning angle.Equivalent azimuth scan of arranging can be obtained by the digitized picture database with interpolation method by the data of these two selected equator peak values (that is the surface of Tu Xiang each side reflection); The arrangement of being constructed makes a data point corresponding to 1/3 radian.

Orientation angle (OA) is with the arc length degree at half greatest optical density place of equator peak value (corresponding to the angle of the point at 50% place of maximal density), proofreaies and correct the fabric bottom.Come compute location angle (use interpolation method, this value is not an integer) by the number of data points between the 1 high point of every side of peak value.Measure two peak values, obtain orientation angle with the mean value of two measured values.

Long-term interval and standardized long-term strength: long-term (LPS) and long-term strength (LPI) K.G. at interval by Anton Paar, Graz, the diffractometer that Austria makes is measured with a Kratky low-angle.Diffractometer is installed in the line focus place of Fei Lifu XRG3100X ray generator, and this generator is equipped with the center X-ray tube of the sensitivity of a length, operates in 45KV and 40ma.X-ray focus is observed at the place, angle of leaving at 6 degree; And the wide long and narrow inlet with 120 microns of light beam is determined.Filtered by the nickel filter of a 0.7mil and be equipped with from the copper K-α radiation of X-ray tube and allow NaI (TI) scintillation counter of the pulsed height analyzer that 90% copper K-alpha ray passes through detect symmetrically with one.

The preparation of nylon samples is to twine fabric parallel to each other at a frame peripheral that contains the hole of 2cm diameter.The area that is covered by fabric is about 2cm and takes advantage of 2.5cm and typical sample to contain the 1 gram nylon of having an appointment.The actual amount of sample is to be close to the transmitted intensity that is brought till 1/e or 0.3678 up to the transmissivity of X-ray beam and to weaken to determine by measuring by the sample that suffers strong copper K-α X ray signal and adjusting sample thickness.Be to measure transmissivity, a kind of strong scattering body is placed into diffraction locations, and nylon samples is inserted in its front, so scattering object is in the another side of beam slit.If the measured intensity that does not weaken is I.With the intensity that weakens be I, transmissivity T is I/I so.Transmissivity is the thickness that the sample of 1/e has an optimum, will be less than the sample of optimal thickness because be greater than or less than the diffracted intensity of the sample of this optimal thickness.

The installation of nylon samples makes axially perpendicular with the length direction of beam (or parallel with the moving direction of detector) of fabric.For the capable focus of Kratky diffractometer eye-level, the axle of fabric is perpendicular with desktop.Between 0.1 and 4.0 degree, 2 θ, collect 180 scanning elements, as described below: 81 points that step-length is 0.0125 degree between 0.1 and 1.1 degree; 80 points that step-length is 0.025 degree between 1.1 and 3.1 degree; 19 step-lengths are 0.05 point between 3.1 and 4.0 degree.Sweep time is with 1 hour each time, and each point was with 20 seconds time.Result data comes match with a parabola and removes the background of instrument.The background of instrument, transmissivity T is multiply by in the scanning that obtains when promptly not having sample, and removes from sample scanning step by step.Proofread and correct thickness of sample at the number of scans strong point then, multiply by a correction factor CF=-1.0/ (eTln (T)).Here e is the end of natural logrithm, l _n(T) always negative value and CF be on the occasion of.Also have, if T=1/e, then CF=1 for the sample of optimal thickness.Yet CF is always greater than 1, and by for the sample of optimal thickness observed sample with optimal thickness not being come the correction intensity value.Relatively near optimum sample, CF generally can be maintained at less than 1.01 for thickness, so it is littler than a percentage number that the correction of thickness of sample can keep, this percentage number is in the scope of being forced indefinitely by counting statistics.

Measured intensity is caused that by reflection their diffraction vector is parallel to the axle of fabric.For most of nylon fabrics, reflection is observed near 1 degree, 2 θ.In order to determine the position and the intensity of this reflection, below peak value, at first draw a bottom line, this line is at the positive tangent above and below the diffraction curve at the angle place of peak value oneself.Then with a line drawing that is parallel to the tangent bottom line go out to be bordering on it apparent maximum but generally at the tangent of the peak value at 2 more higher θ value places.If the sample bottom is removed, the position at the positive point of contact of 2 θ values is peaked positions, so get this value.Long-term LPS is at interval calculated by the peak that the utilization of Bragg law so obtains.For low-angle, reduce:

The intensity LPI at LPS=λ/Sin (2 θ) peak is defined in the positive point of contact of curve and the vertical range between the bottom line below it, calculates with per second.

The Kratky diffractometer is that an injection wire harness instrument and measured intensity were arbitrarily before standardization.Measured intensity may change along with different instruments, and for given same instrument, because X-ray tube is aging, intensity level can change along with different Measuring Time, changes the location, skew and the wearing and tearing that occur in luminescent crystal.For the quantitative comparison of sample room, measured intensity is with the standardization recently of a reference sample stable, standard.This reference substance selects a kind of nylon 66 samples (T-717 yarn, by E.I.duPont Co., Wilmington, De. makes), in first sample of this patent (feeding yarn 1) it is used as feeding yarn.

Sonic modulus: the mensuration of sonic modulus resembles that Pacofsky U.S.3748844 the 5th hurdle the 17th to 38 row reported, the disclosed content of this piece patent is specifically implemented, just the condition of fabric changes 24 hours into, 70 °F (21 ℃), be that 65% relative humidity and nylon fabrics are tested under 0.1 carat of power of every DENIER before the test, rather than the 0.5-0.7 that reports of the polyester fiber of the patent of institute's reference.

The accelerated ageing process of oligomer precipitation: a bundle yarn was placed in the temperature (37.8 ℃) of control and humidity (90%RH) environment following 168 hours, then 20 ℃ with the 50%RH condition under balance 24 hours.After check, 18000 meters yarns are placed on the ceramic guiding element, and prestressing force is that 0.1g/d is under 500mpm.The sediment that forms on guiding element is dissolved in the aluminium dish of weighing in advance with methyl alcohol.Make the methyl alcohol vaporization, will coil with sediment and weigh.The increase that dish weighs is owing to sediment.Sedimentary amount multiply by 10 with the sedimentary gram number of every gram fiber ⁶Represent.Find that settling rate generally increases along with increasing of RV value.The mixture of MPMD in nylon 66 polymer, the polymer of the low RV value of permission to use is to provide the balance drafting tension less than 1.2g/d and acceptable low settling rate is provided under high weaving speed.

Cross polarization Combined with " magic anglespinning " is nuclear magnetic resonance (NMR) technology (CP/MAS), is used to collect the spectroscopic data of describing copolymer and the difference of homopolymers aspect its structure and composition.Particularly, solid-state carbon 13 (C-13) that obtains with CP/MAS and nitrogen 15 (N-15) the NMR data crystalline phase and the amorphous phase that can be used to measure polymer.This technology by people such as Schafer in the big molecule 10,384 (1977) and people such as Schaefer in magnetic resonance magazine 34,443 (1979), describe, be described in big molecule 22,706 (1989) by Veeman and its partners recently.

The configuration data relevant with the amorphous phase of polymer can be obtained by described technology of above mentioned Veeman and VanderHart in the description in big molecule 12,1232 (1979) and big molecule 18,1663 (1985).

The parameter that influences molecular motion can be obtained by the technology of a kind of C-13T1 of comprising and C-13Tlrho.Torchia has developed C-13T1, and at the magnetic resonance magazine, Vol.30,613 (1978) middle descriptions.The measurement of C-13Tlrho is described in big molecule 10,384 (1977) by Schafer.

Natural abundance N-15NMR data add that the C-13 solid state NMR analyzes resulting data and formed complete information.This analysis also can provide the crystal structure distribution data of the polymer of being set forth by Mathias in polymer communication 29,192 (1988).The MBB dyeability

For the test of MBB dyeing, prepare one group of 42 yarn sample, each samples weighed 1 gram preferably is sprayed onto yarn on the shallow bid during sample preparation.9 samples are used for comparison; Remaining be used for test.

Then whole samples are dipped into to contain in 54 liters of dyeing aqueous solution that 140ml standard buffer solution and 80ml1.22% anthraquinone grind blue BL (being abbreviated as MBB) (the blue look 122 of C.I. acid) and dye.Final body lotion PH is 5.1.Solution with 3-10～/min speed is increased to T by room temperature _DYE(dyeing transition temperature, in this temperature, the dyestuff absorption rate has an increase suddenly) also kept temperature 3-5 minute.The sample that dyed look is rinsed, dry and with reflecting colorimetric instrumentation amount dye level.

Dye number can be determined by calculated the K/S value by the reflectance factor reading.Relational expression is: Wherein R is a reflectance value.Value 180 is to adjust the dyeability of controlling sample with standardization with a known benchmark.The ABB dyeability

The mode identical with the MBB dyeability prepared some samples.All sample immersions are contained the 140ml standard buffer solution, dye in 54 liters of staining solutions of 100ml 10%Merpol LFH (a kind of liquid is by the nonionic cleaning agent of E.I.Du Pont de Nemours andCo. production) and the blue SAP (being abbreviated as ABB) of 80-500ml 0.56% alizarin cyamine (C.I. acid blue 45).Final body lotion PH is 5.9.Solution temperature with 3-10～/min is increased to 120～C by room temperature, and remained under this temperature 3-5 minute.The sample that dyed look is rinsed drying and measures dye level with the reflection colorimeter.

Dye number can be determined by calculated the K/S value by the reflectance factor reading.Relational expression is:

R=reflectance value wherein.Value 180 be used to adjust with standardization control sample for provide a LMDR to represent the dyeability of the %CV of measured K/S according to fabric.

Dyeing transition temperature be dyeing during under this temperature fabric construction open the unexpected increase that is enough to cause dye absorption rate.It and the thermal physical process of the vitrification point of polymer, fabric and relevant with the size and the structure of dye molecule.Yet for specific dyestuff, the dyeing transition temperature can be counted as the indirect measurement of fabric " hole " size.

The dyeing transition temperature can record as laxative remedy for blue 122 dyestuffs of C.I. acid: with yarn prewashing in the bath that contains every gram yarn sample 800 gram body lotions.Add 0.5g/L pyrophosphoric acid 4 sodium salts and 0.5g/L Merpol (R) HCS.Temperature is bathed in speed rising with 3 ℃/min, till the bath temperature is 60 ℃.In the time of 60 ℃, continue 15 minutes, rinsing then.Notice that the prewashing temperature must not surpass the coloration of textile materials transition temperature.As if if the dyeing transition temperature approaches this wash temperature, this prewashing process should be carried out under a lower wash temperature.Adjusting and bathing temperature is 30 ℃, and adds C.I. acid blue 122 and the 5g/l sodium phosphate that accounts for fabric weight 1%.Regulate PH to 5.0 with M.S.P and acetate.Add the yarn sample and will bathe temperature rise to 95 ℃ with the speed of 3 ℃/min.

Bathe 5 ℃ of warm every risings, taking-up～25ml dyeing liquor sample from the dyeing bath.The cooling sample is object of reference is measured each sample under the about 633nm of maximum absorbance with spectrophotometer absorbance to room temperature and with water.Calculate dyestuff consumption % and dyestuff is consumed % the dye bath temperature is mapped.Do traverse along every section of two sections straight line portioies of curve.Temperature at the traverse place is dyeing transition temperature (T _DYE), it is a kind of the measuring of the sparse property of fabric construction, for the preferred T of stretched yarn radially _DYEValue is less than about 65 ℃, particularly less than 60 ℃.

DENIER mutation analysis device (DVA) is a kind of electric capacity instrument, utilizes the principle identical with Uster, is used to measure DENIER and changes.Per 1/2 meter DENIER number that DVA measures the length that surpasses 240 meters samples changes, and expresses the %CV of these measurements.It also expresses the DENIER % of stretching, extension, and this is the mean value for the reading of the high attenuating of 8 30 meters sample.Utilize the datagram in the form that DVA obtains to say variation coefficient (DVA%CV).

The dynamic mechanical analysis test follows these steps to carry out.Using a kind of " rheology electronic vibration " DDV-IIC and a kind of IMC-1 stove that is equipped with one " autoelectrinic vibration " computerization kit, is by Imass, Inc., and Hingham MA makes.Also using the stainless sample holder bar and the fabric clip of standard, also is by Imass, and Inc. makes.The computer program that is applicable to autoelectrinic vibration has been modified so that in-30 to 220 ℃ temperature range the rate of heat addition of sample and static tension force are kept constant and can select.Also revised the sample length when printing static tension force, time and peek strong point, so that the thick-and-thin tension force and the rate of heat addition can further be confirmed and can measure shrinkage factor to temperature under constant tension force.This computer program does not comprise the correction of carrying out according to clip quality and load beam, and all operations and calculating are except above-described, all according to the carrying out that the autoelectrinic vibrator is provided by Imass.

The present invention uses the static tension force (based on DENIER before the test) corresponding to every DENIER 0.1 gram to the test of sample.The used rate of heat addition is 1.4 ± 0.1 ℃/min,

Test frequency is 110Hz.Computerized equipment was got a reading in approximate per 1.5 minutes, but this is not constant, because be to keep static tension force constant after the length of adjustment sample, the needed time of computer is different.Initial sample length is 2.0 ± 0.1cm.The temperature range that test is carried out is-30 to 230 ℃.Be adjusted into 400 ± 30 by the DENIER number that makes sample that yarn folding or branch are come, to guarantee heat and static(al) middle part in the load beam scope.

Determine tangent and the E " position of peak value of △ by following method.At first, by a suitable parameter plot of temperature is estimated the apparent position of peak value.The final position of peak value determined by least square method, is suitable for a quadratic polynomial, estimated position ± calculate in the scope of 10-15 degree, the identification temperature is an independent variable.Peak temperature is taken as this polynomial peaked temperature.Transition temperature, promptly the temperature of bending point can be determined similarly.Estimate the bending point that is similar to by a plot.Then, cover by the enough data point of a tangible flat-top to another transitional region, be applicable to three multinomials, the identification temperature is an independent variable.Transition temperature is taken as final polynomial bending point.Near the E " peak temperature (T that (sees Figure 12) 100 ℃ _{E " max}) be taken as the indicated value of α transition temperature (TA), and for level dyeing, importantly make this value lower (that is, be lower than 100 ℃, be preferably and be lower than 95 ℃, be preferably be lower than 90 ℃).The dyeing rate experimental technique:

As everyone knows, the dyeing rate of nylon fabrics is strong especially depends on structure.The radial and axial diffusion coefficient of the dyestuff in the nylon fabrics can be according to Princeton textile research institute, N.J., and at the dyestuff transport phenomenon, No. 15, progress report and the described process of reference thereof are measured.

The dyestuff that brings by dye bath reduce and corresponding fabric to the absorption of dyestuff with calculate diffusion coefficient, all can utilize the serial article in the textile research magazine, the 55th volume, the 10th phase according to H.Kobsa, in October, 1985,573 pages of described processes of beginning are carried out resulting data.Carey, the Hanby textile research of N.C. change that this method is carried out be available.

In the modification of the technology of Kobsa, we get the 2.5gm fabric and put into bath according to what can hold that (Ahiba type Turbocolor-100 has a PCO91 controller Ahiba AG, Basel Switzerland), contain the 700ml dye solution in the bath, contain 0.125gm in the solution and grind blue BL (C.I. acid indigo plant 80, C.I. acid blue 122 also provides similar result).The preparation of dye solution is to add 50ml to contain 2.5gm dyestuff/the rise standing solution of deionized water, 0.5 gram sodium dihydrogen phosphate-hydrate and 1 Dow-Corning defoamer " B " and be supplemented to 1 liter with deionized water.Dye bath PH is 4.5 ± 0.02, temperature controls to ± and 2 ℃ by Guided Wave Inc. (EL Dorado Hills, Ca.) probe of the 200 type fiber waveguide diffraction analysis instrument of Zhi Zaoing is inserted into the variation of going to measure absorptivity in the Ahiba dyeing bath chronically, thereby obtain the dye strength in the bath, preferably use the wavelength of absorptivity maximum in the dyestuff diffraction spectra.With this technology, we have measured time and the temperature that depends on coloration of textile materials speed.Different time before dyeing fully, fabric can shift out from bath, and can measure the dye strength profile that passes through fabric, this measurement resemble by textile research publication described measuring as structure.Depend on that the temperature of dyeing rate and diffusion property also can be used as temperature variant one of structure and measure.

Second colouring method comprises to be handled fabric mutually as fixing in the LC system, and dyestuff is as the sorbing material in flowing mutually.By Hewlett Packard, PaLo Alto, the HewlettPackard 1084B type LC instrument that has a UV detector that Ca. makes is used, and 1 gram fabric is put in the stainless head tower of a 20cm, and internal diameter is 1/4 inch.With the flow velocity of 2ml/min with deionized water with the pump vertical tower of the warp let-off that makes progress.With a kind of and recited above similar, just do not contain the dye solution place of water of defoamer.System temperature is remained on 30 ℃, but can change to determine temperature according to effect.Dyestuff content in the water that flows out can be by detectors measure, and measurement is to carry out under the wavelength of 584nm, under this wavelength, and the absorptivity of the 450nm wavelength that the reference dye absorptivity is low, the dyestuff absorptivity approaches maximum.Just begin, the dyestuff content of effluent is approximately 0, and dyestuff content increases sharply then, until a curve flat-top that slowly increases.After half an hour, before fabric reached dyestuff content balance, the dye solution that is admitted in the tower substituted with deionized water.When the water that flows forward passed through tower, dyestuff was in front discharged by fabric, and the concentration of dyestuff can surpass the concentration in the dye solution in fabric.By slope and area under effluent absorptivity and the deal curve, we can determine the difference of the scattering nature of surface characteristic and dyestuff.

Table I item number DENIER spinning speed N6 relative viscosity Tp DT Eb

RV ℃ of G/D %I-10 of MPM % thin slice yarn △ 53.8 4,500 0 40.0 39.6 (0.4) 288 1.10 67.0I-2C 53.4 4,500 0 40.0 44.0 4.0 288 1.06 70.6I-3C 53.5 4,500 0 40.0 50.1 10.1 288 0.93 78.8I-4C 54.2 4,500 0 42.0 58.0 16.0 288 0.87 89.7I-5C 53.4 4,500 0 40.0 68.2 28.2 288 0.93 86.9I-6C 53.5 4,500 0 40.0 72.2 32.2 288 0.96 82.4I-7C 53.5 5,300 0 40.0 39.6 (0.4) 288 1.47 57.3I-8C 53.6 5,300 0 40.0 44.0 4.0 288 1.38 62.9I-9C 53.5 5,300 0 40.0 50.1 10.1 288 1.30 66.1I-10C 53.4 5,300 0 40.0 52.8 12.8 288 1.34 66.1I-11C 50.5 5,300 0 40.0 66.0 26.0 288 1.28 77.0I-12C 53.3 5,300 0 40.0 72.2 32.2 288 1.19 76.2

Table I (continuing)

N6 Tp DT Eb MPM ％ △RV ℃ G/D ％I-13 53.6 5000 5 41.6 64.1 22.5 288 0.96 79.5I-14 54.0 5000 5 41.6 55.0 13.4 288 1.10 68.0I-15 53.2 5300 5 41.5 73.9 22.4 288 1.04 80.3I-16 53.6 5300 5 41.6 64.1 22.5 288 1.05 73.2I-17 53.0 5300 5 41.6 55.0 13.4 288 1.21 71.2I-18 54.0 5300 5 41.6 63.9 22.3 288 1.13 74.6I-19 50.5 5300 5 40.0 63.0 23.0 290 1.23 77.0I-20 53.4 5300 5 41.6 66.4 24.8 293 1.09 80.9I-21 53.5 5300 5 40.0 63.9 23.9 293 1.06 79.9I-22C 54.4 5300 5 41.1 40.5 ( 0.6 ) 288 1.50 63.5I-23C 54.3 5300 5 42.6 45.6 3.0 288 1.60 61.6I-24 54.3 5300 5 42.8 47.4 4.6 288 1.15 67.0

Table I (continuing)

N6 Tp DT Eb MPM ％ △RV ℃ G/D ％I-25 27.1 5000 2.5 42.0 66.3 14.3 291 0.92 80.7I-26 27.4 5000 2.5 42.0 70.5 28.5 291 0.97 80.9I-27 25.8 5300 2.5 42.0 66.3 24.3 291 1.00 79.0I-28 25.6 5300 2.5 42.0 70.5 28.5 291 1.06 76.9I-29 27.3 5000 5 48.0 49.6 1.6 291 0.87 77.8I-30 27.5 5000 5 48.0 51.7 3.7 291 0.89 78.1I-31 27.5 5000 5 48.0 59.0 11.0 291 0.87 82.7I-32 26.8 5000 5 48.0 66.6 18.6 291 0.94 81.6I-33 27.1 5000 5 48.0 72.9 24.9 291 0.93 77.8I-34 25.9 5300 5 48.0 43.4 ( 4.6 ) 291 0.92 72.5I-35 25.9 5300 5 48.0 51.7 3.7 291 0.98 76.3I-36 25.9 5300 5 48.0 59.0 11.0 291 0.96 79.5

Table I (continuing)

Spinning speed N6 is relatively to RV ℃ of G/D %I-37 of viscosity Tp DT Eb item number danier MPM % thin slice yarn △ 25.0 5,300 5 43.0 64.0 21.0 290 1.00 79.0I-38 25.8 5,300 5 48.0 66.6 18.6 291 0.99 78.7I-39C 25.7 5,000 0 42.0 48.0 6.0 288 1.07 71.4I-40C 26.0 5,000 0 42.0 53.0 5.0 288 0.98 76.0I-41C 25.8 5,000 0 42.0 58.0 16.0 288 0.96 78.9I-42C 25.5 5,000 0 42.0 68.0 26.0 288 1.01 80.9I-43C 25.6 5,300 0 42.0 48.0 6.0 288 1.19 67.8I-44C 25.9 5,300 0 42.0 58.0 16.0 288 1.05 72.5I-45C 25.5 5,300 0 42.0 68.0 26.0 288 1.13 73.6I-46C 25.8 5,300 0 42.0 64.4 22.4 291 1.19 73.7

Table I (continuing)

N6 Tp DT Eb MPM ％ △RV ℃ G/D ％I-47 51.6 3500 5 39.0 71.1 32.1 290 0.85 86.8I-48 51.5 4000 5 39.0 69.1 30.1 290 1.02 80.1I-49 54.0 5000 5 41.6 55.0 13.4 288 1.10 68.0I-50 53.6 5000 5 41.6 64.1 22.5 288 0.96 79.5I-51 53.3 5000 5 41.6 73.9 32.3 288 0.96 83.8I-52C 54.4 5300 5 39.0 40.5 1.5 288 1.50 63.5I-53C 54.3 5300 5 39.0 45.0 6.0 288 1.39 66.8I-54C 50.7 5300 5 39.0 51.1 12.1 288 1.32 66.3I-55 53.0 5300 5 41.6 55.0 13.4 288 1.21 71.2I-56 50.0 5300 5 39.0 58.9 19.9 288 1.17 75.6I-57 50.9 5300 5 41.6 64.1 22.5 288 1.05 72.0I-58 51.2 5300 5 39.0 67.0 28.0 290 1.14 78.1

Table I (continuing)

RV ℃ of G/D %I-59C of speed N6 relative viscosity Tp DT Eb item number danier MPM % thin slice yarn △ 54.3 5,600 5 39.0 45.5 6.5 288 1.53 63.3I-60C 54.1 5,600 5 41.6 55.0 13.4 288 1.34 61.8I-61 53.9 5,600 5 41.6 64.1 22.5 288 1.14 72.0I-62 53.4 5,600 5 41.6 73.9 32.2 288 1.11 79.0I-63C 52.4 3,500 0 40.0 39.6 (0.6) 288 0.62 76.6I-64C 52.5 3,500 0 40.0 39.6 (0.6) 288 0.76 75.4I-65C 53.4 3,500 0 40.0 50.1 10.1 288 0.59 91.5I-66C 53.6 3,500 0 40.0 68.2 28.2 288 0.67 99.8I-67C 53.4 3,500 0 40.0 72.2 32.2 288 0.72 100.2I-68C 53.8 4,500 0 40.0 39.6 (0.4) 288 1.10 67.0I-69C 53.4 4,500 0 40.0 44.0 4.0 288 1.06 70.6

Table I (continuing)

N6 Tp DT Eb MPM ％ △RV ℃ G/D ％I-70C 53.5 4500 0 40.0 50.1 10.1 288 0.93 78.8I-71C 51.6 4500 0 40.0 62.9 22.9 288 1.29 70.8I-72C 53.4 4500 0 40.0 68.2 28.9 288 0.93 86.9I-73G 53.5 4500 0 40.0 72.2 32.2 288 0.96 82.4I-74C 53.8 5000 0 40.0 39.6 ( 0.4 ) 288 1.31 61.9I-75C 53.7 5000 0 40.0 44.0 4.0 288 1.28 63.4I-76C 53.7 5000 0 40.0 50.1 10.0 288 1.14 72.2I-77C 53.5 5000 0 40.0 68.2 28.9 288 1.07 81.2I-78C 53.4 5000 0 40.0 72.2 32.2 288 1.10 79.6I-79C 53.5 5300 0 40.0 39.6 ( 0.4 ) 288 1.47 57.3I-80C 53.6 5300 0 40.0 44.0 4.0 288 1.38 62.9I-81C 52.7 5300 0 43.5 49.7 6.2 288 1.24 70.0

Table I (continuing)

RV ℃ of G/D %I-82C of speed N6 relative viscosity Tp DT Eb item number danier MPM % thin slice yarn △ 54.0 5,300 0 43.5 50.3 6.8 288 1.20 71.5I-83C 53.7 5,300 0 43.5 52.3 8.8 288 1.15 74.4I-84C 53.8 5,300 0 40.0 64.7 24.7 288 1.15 76.2I-85C 53.8 5,300 0 40.0 68.5 28.5 288 1.15 75.7I-86C 53.0 5,300 0 40.0 71.8 31.8 288 1.19 75.6I-87C 53.0 5,300 0 40.0 74.2 34.2 288 1.18 77.4I-88C 53.5 5,600 0 40.0 39.6 (0.4) 288 1.55 57.1I-89C 53.6 5,600 0 40.0 44.0 4.0 288 1.57 60.0I-90C 53.5 5,600 0 40.0 50.1 10.1 288 1.41 64.8I-91C 53.6 5,600 0 40.0 68.2 28.2 288 1.26 75.0I-92C 53.3 5,600 0 40.0 72.2 32.2 288 1.26 73.5

Table II

Tp D, Lc DT △RV ℃ MM L/D MPM ℃ CM G/DII-1 41.6 63.9 22.3 283 .254 1.9 18.3 21 122 1.13II-2 41.6 63.9 22.3 293 .254 1.9 18.3 21 122 1.11II-3 41.6 63.9 22.3 293 .254 1.9 6.1 21 122 1.17II-4 41.6 63.9 22.3 293 .254 1.9 18.3 40 122 1.15II-5 40.4 62.4 22.0 288 .229 1.9 18.3 21 135 1.04II-6 40.4 62.4 22.0 288 .254 1.9 18.3 21 135 1.09II-7 41.6 63.9 22.3 283 .254 4.0 18.3 21 122 1.16II-8 41.6 63.9 22.3 283 .254 1.9 18.3 21 122 1.19II-9 40.4 67.5 27.1 293 .203 1.9 18.3 21 122 1.00II-10 40.4 67.5 27.1 293 .203 1.9 18.3 21 76 1.07II-11C 40.4 54.2 13.8 293 .254 1.9 6.1 21 122 1.27

Table II (continuing)

Relative viscosity Tp D, MPM ℃ of CM G/DII-12 of cooling-air Lc DT item number thin slice RV ℃ of MM L/D of yarn △ 40.4 54.2 13.8 293 .254 1.9 18.3 21 122 1.19II-13 40.4 54.2 13.8 293 .254 1.9 30.3 21 122 1.17II-14 40.4 54.2 13.8 293 .254 1.9 18.3 21 122 1.17II-15C 40.4 54.2 13.8 293 .254 1.9 18.3 40 122 1.26II-16C 40.4 54.2 13.8 293 .254 1.9 18.3 21 102 1.26II-17C 40.4 54.2 13.8 293 .254 1.9 18.3 21 102 1.40II-18 39.0 63.9 24.9 283 .254 1.9 6.1 21 122 1.21II-19 39.0 63.9 24.9 293 .203 4.0 18.3 21 122 1.12II-20 39.0 67.0 28.0 290 .254 1.9 18.3 21 135 1.14II-21 39.0 67.3 28.3 290 .254 1.9 18.3 21 135 1.11

Table III

D, DT ^*Ten. EB BOS project danier DPF mm gpd gpd % %III-1 13.5 1.04 0.229 2.07 2.96 64 3.6III-2 17.1 1.32 0.254 1.99 3.22 80 6.2III-3 18.9 1.45 0.229 1.80 3.70 70 6.7III-4 20.7 1.59 0.254 1.80 3.14 82 4.2III-5 22.5 1.73 0.254 2.01 3.11 70 5.2III-6 26.1 2.01 0.229 1.57 3.45 90 4.4III-7 32.4 2.49 0.229 1.33 2.72 89 4.8III-8 92.7 7.13 0.339 1.56 2.55 77 4.6^*Replace 185 ℃ to measure DT with room temperature (20 ℃)

Table VI speed Avg shroud elongates stress (σ ₁) vs.TDR yarn D/Y is than T2/T1 1.2727 1.2984 1.3333 1.3594 1.3781 1.3962I-46C 2.04 1.35 0.484 0.519 0.611 0.680 0.717 0.754I-37 2.04 1.32 0.445 0.467 0.587 0.598 0.620 0.670I-46C 2.62 1.14 0.560 0.597 0.667 0.775 0.827 0.894I-37 2.62 1.09 0.484 0.532 0.613 0.680 0.744 0.782

Table V

TD ( σ ) ,g/d C 1.05X 1.10X 1.15X 1.20X 1.25X 1.30X 1.33X 1.35X 1.40X 1.45X 1.55V-1-1 75 0.36 0.56 0.77 0.98 1.24 1.48 1.64 1.75 2.02 2.34 2.75V-1-2 125 0.26 0.41 0.59 0.78 0.99 1.21 1.35 1.44 1.68 1.97 2.33V-1-3 173 0.22 0.35 0.51 0.72 0.87 1.05 1.17 1.25 1.48 1.72 2.05V-2-1 75 0.40 0.63 0.88 1.13 1.40 1.70 1.89 2.02 2.33 2.71V-2-2 125 0.26 0.45 0.66 0.89 1.11 1.38 1.54 1.65 1.94 2.23 2.93V-2-3 173 0.21 0.36 0.52 0.71 0.92 1.13 1.28 1.37 1.63 1.92 2.52V-3-1 75 0.35 0.54 0.73 0.91 1.09 1.28 1.40 1.47 1.67 1.91 2V-3-2 125 0.17 0.27 0.40 0.54 0.69 0.84 0.95 1.03 1.22 1.43 1.69V-3-3 173 0.11 0.19 0.28 0.37 0.49 0.62 0.70 0.76 0.92 1.10 1.34

Table VI A

MPM ℃ of D/Y of speed heater TDR stress bulkiness project compares σ ₁,G/D ％VIA-1 800 220 2.455 1.348 0.319 12.5VIA-2 800 240 2.290 1.318 0.260 14.6VIA-3 800 240 2.290 1.378 0.333 14.0VIA-4 800 240 2.620 1.318 0.240 13.7VIA-5 800 240 2.620 1.378 0.313 14.1VIA-6 900 200 2.455 1.348 0.346 10.8VIA-7 900 220 2.455 1.318 0.286 12.0VIA-8 900 220 2.455 1.348 0.332 12.5VIA-9 900 220 2.455 1.378 0.360 13.0VIA-10 900 240 2.455 1.348 0.292 13.8

Table VI A (continuing)

MPM ℃ of D/Y of speed heater TDR stress bulkiness item number compares σ ₁,G/D ％VIA-11 1000 200 2.290 1.318 0.331 9.2VIA-12 1000 200 2.620 1.318 0.351 10.4VIA-13 1000 220 2.455 1.348 0.339 11.6VIA-14 1000 240 2.290 1.318 0.312 10.7VIA-15 1000 240 2.290 1.378 0.340 13.1VIA-16 1000 240 2.620 1.318 0.312 10.5VIA-17 1000 240 2.620 1.378 0.374 13.0

Table VI B

MPM ℃ of D/Y of speed heater TDR stress bulkiness item number compares σ ₁,G/D ％VIB-1C 800 220 2.455 1.348 0.367 12.1VIB-2C 800 240 2.290 1.318 0.287 14.3VIB-3C 800 240 2.290 1.378 0.348 15.4VIB-4C 800 240 2.620 1.318 0.267 13.2VIB-5C 800 240 2.620 1.378 0.355 13.4VIB-6C 900 200 2.455 1.348 0.390 10.4VIB-7C 900 220 2.455 1.318 0.320 11.4VIB-8C 900 220 2.455 1.348 0.371 12.5VIB-9C 900 220 2.455 1.378 0.362 12.9VIB-10C 900 240 2.455 1.348 0.327 13.1

Table VI B (continuing)

MPM ℃ of D/Y of speed heater TDR stress bulkiness item number compares σ ₁.G/D ％VIB-11C 1000 200 2.290 1.318 0.341 10.2VIB-12C 1000 200 2.620 1.318 0.365 9.8VIB-13C 1000 220 2.455 1.348 0.374 11.2VIB-14C 1000 240 2.290 1.318 0.313 12.6VIB-15C 1000 240 2.290 1.378 0.368 14.7VIB-16C 1000 240 2.620 1.318 0.313 11.9VIB-17C 1000 240 2.620 1.378 0.375 12.3

Table VII

Danier speed yarn DT Eb item number M/MIN RV G/D %VII-1C 51.6 4,300 47.9 1.19 69.5VII-2C 51.8 4,300 49.0 1.03 71.0VII-3C 51.4 4,300 52.2 0.91 77.9VII-4C 51.5 4,300 59.0 0.89 76.3VII-5C 51.6 4,300 64.2 0.88 81.7VII-6C 51.9 4,300 72.2 0.95 78.6VII-7C 51.7 4,800 47.9 1.36 64.0VII-8C 52.0 4,800 49.0 1.21 67.6VII-9C 51.2 4,800 52.2 1.08 71.4VII-10C 51.7 4,800 59.0 1.04 71.0VII-11C 51.5 4,800 64.2 1.08 72.4VII-12C 52.1 4,800 72.2 1.07 73.2

Table VII (continuing)

Speed yarn DT Eb item number danier M/MIN RV G/D %VII-13C 51.8 5,300 47.9 1.55 62.8VII-14C 51.9 5,300 49.0 1.41 65.0VII-15C 51.3 5,300 52.2 1.24 68.0VII-16C 51.7 5,300 59.0 1.21 68.6VII-17C 52.1 5,300 64.2 1.18 68.7VII-18C 51.7 5,300 72.2 1.21 68.3VII-19C 52.0 5,800 47.9 1.74 55.9VII-20C 52.1 5,800 49.0 1.61 63.3VII-21C 51.6 5,800 52.2 1.45 64.2VII-22C 51.6 5,800 59.0 1.38 65.1VII-23C 51.9 5,800 64.2 1.36 63.9VII-24C 51.2 5,800 72.2 1.34 65.1

Table VIII

Speed MPMD yarn Tp DT EB item number danier MPM % RV C G/D %VIII-1 51.3 4,500 5 49.6 290 0.90 85.9VIII-2 50.8 4,500 5 56.4 290 0.86 87.5VIII-3 51.1 4,500 5 66.4 290 0.87 88.5VIII-4 51.5 5,000 5 49.6 290 1.08 79.0VIII-5 51.1 5,000 5 56.4 290 1.01 81.3VIII-6 50.5 5,000 5 66.4 290 0.99 83.7VIII-7 51.3 5,300 5 49.6 290 1.19 74.3VIII-8 50.7 5,300 5 56.4 290 1.12 78.3VIII-9 50.7 5,300 5 66.4 290 1.10 81.5

Table VIII (continuing)

Speed MPMD yarn Tp DT EB item number danier MPM % RV C G/D %VIII-10C 51.5 5,600 5 49.6 290 1.33 71.4VIII-11C 51.4 5,600 5 56.4 290 1.24 74.8VIII-12 50.9 5,600 5 66.4 290 1.19 79.7VIII-13C 56.9 5,900 5 49.6 290 1.39 67.1VIII-14C 50.9 5,900 5 56.4 290 1.32 72.5VIII-15C 51.0 5,900 5 66.4 290 1.30 75.8VIII-16 50.7 4,500 10 47.6 280 0.92 78.4VIII-17 51.9 4,500 10 54.6 280 0.97 80.6VIII-18 51.3 4,500 10 61.9 280 0.83 88.0

Table VIII (continuing)

Speed MPMD yarn Tp DT EB item number danier MPM % RV C G/D %VIII-19 52.0 5,000 10 47.6 280 1.08 73.0VIII-20 51.1 5,000 10 54.6 280 1.04 78.5VIII-21 51.8 5,000 10 61.9 280 0.96 81.0VIII-22 51.9 5,300 10 47.6 280 1.17 71.0VIII-23 51.7 5,300 10 54.6 280 1.09 77.2VIII-24 51.7 5,300 10 61.9 280 1.09 78.0VIII-25C 52.0 5,600 10 47.6 280 1.29 66.0VIII-26 51.9 5,600 10 54.6 280 1.13 72.2VIII-27 51.1 5,600 10 61.9 280 1.16 75.5

Table VIII (continuing)

Speed MPMD yarn Tp DT EB item number danier MPM % RV C G/D %VIII-28 51.9 5,900 10 47.6 280 1.40 60.2VIII-29 51.6 5,900 10 54.6 280 1.25 67.8VIII-30C 51.5 5,900 10 61.9 280 1.18 73.4VIII-31 52.5 4,500 20 39.9 275 1.09 72.0VIII-32 51.9 4,500 20 50.1 275 0.83 80.7VIII-33 51.0 4,500 20 66.8 275 0.87 80.6VIII-34C 52.3 5,000 20 39.9 275 1.22 66.7VIII-35 52.0 5,000 20 50.1 275 1.03 74.2VIII-36 51.7 5,000 20 66.8 275 0.99 76.8

Table VIII (continuing)

Speed MPMD yarn Tp DT EB item number danier MPM % RV C G/D %VIII-37C 53.4 5,300 20 39.9 275 1.25 66.5VIII-38 51.8 5,300 20 50.1 275 1.09 72.8VIII-39 50.5 5,300 20 66.8 275 1.04 74.5VIII-40C 52.1 5,600 20 39.9 275 1.33 62.2VIII-41 51.9 5,600 20 50.1 275 1.18 67.7VIII-42 51.4 5,600 20 66.8 275 1.14 71.0VIII-43C 52.1 5,900 20 39.9 275 1.43 57.9VIII-44C 52.0 5,900 20 50.1 275 1.35 63.7VIII-45C 51.7 5,900 20 66.8 275 1.25 68.7

Table VIII (continuing)

Speed MPMD yarn Tp DT EB item number danier MPM % RV C G/D %VIII-46 52.2 4,500 35 47.6 275 0.88 75.7VIII-47 51.9 4,500 35 61.0 275 0.83 80.2VIII-48 51.7 4,500 35 68.3 275 0.82 80.6VIII-49 52.5 5,000 35 47.6 275 1.09 69.9VIII-50 51.9 5,000 35 61.0 275 0.97 74.8VIII-51 51.8 5,000 35 68.3 275 0.95 76.8VIII-52C 52.5 5,300 35 40.6 275 1.32 58.8VIII-53 52.1 5,300 35 47.6 275 1.18 66.7VIII-54 52.2 5,300 35 61.0 275 1.08 73.6VIII-55 52.3 5,300 35 68.3 275 1.03 76.5

Table VIII (continuing)

Speed MPMD yarn Tp DT EB item number danier MPM % RV C G/D %VIII-56C 52.6 5,600 35 40.6 275 1.40 59.3VIII-57C 52.7 5,600 35 47.6 275 1.27 65.8VIII-58 52.1 5,600 35 61.0 275 1.14 68.3VIII-59 52.0 5,600 35 68.3 275 1.11 72.7VIII-60C 52.5 5,900 35 40.6 275 1.50 57.0VIII-61C 50.2 5,900 35 47.6 275 1.36 63.0VIII-62 54.7 5,900 35 61.0 275 1.22 66.2VIII-63 51.7 5,900 35 68.3 275 1.21 67.2

Table I X item number spinning speed yarn N6 Tp air air Lc yarn No. DT

MPM RV ％ C MPM C CM Den. Fils G/DIX-1 5300 64.0 5 290 18 21 135 25.0 7 0.96IX-2 5300 64.0 5 288 18 21 122 38.6 10 1.13IX-3 5300 65.4 5 290 18 21 135 62.5 17 1.19IX-4C 5300 68.1 5 290 18 21 135 52.0 34 1.35IX-5C 5300 64.4 0 291 18 21 135 25.8 7 1.19IX-6C 5300 64.3 0 288 18 21 122 38.7 10 1.22IX-7C 5300 64.6 0 293 18 21 122 61.9 17 1.24IX-8C 5300 62.9 0 288 18 21 122 51.3 34 1.50

Table X item number yarn Tp capillary cooling Lc DT

RV C MM L/D L/D4 MPM C CM G/DX-1 62.6 293 0.254 1.9 116 18 21 122 1.153X-2 62.6 293 0.254 1.9 116 18 40 122 1.171X-3 62.6 293 0.254 1.9 116 6 21 122 1.172X-4 62.6 293 0.254 1.9 116 6 40 122 1.188X-5 62.6 285 0.254 1.9 116 18 21 122 1.177X-6 62.6 285 0.254 4.0 244 18 21 122 1.158X-7 62.6 285 0.203 4.0 478 18 21 122 1.124X-8 64.3 288 0.254 1.9 116 18 21 122 1.220X-9 64.3 288 0.254 1.9 116 18 21 102 1.180

Table X (continuing) item number yarn Tp capillary cooling Lc DT

RV C MM L/D L/D4 MPM C CM G/DX-10 67.8 288 0.254 1.9 116 18 21 122 1.195X-11 67.8 288 0.254 1.9 116 18 21 135 1.182X-12 66.6 290 0.457 1.0 10.5 18 21 135 1.260X-13 66.6 290 0.457 4.0 42 18 21 135 1.240X-14 66.6 290 0.330 1.0 28 18 21 135 1.230X-15 66.6 290 0.330 4.0 111 18 21 135 1.190X-16 66.6 290 0.254 1.9 116 18 21 135 1.180X-17 66.6 290 0.229 1.0 83 18 21 135 1.190

Table X I structural property XI-1 XI-2C XI-3C polymer relative viscosity (RV) 68 65 45 nylon 66 copolymers, %wt 500 deniers 51.6 50.8 52.8 modulus, dg/d 19.7 12.5 16.7 intensity, g/d 4.29 3.99 3.96 elongations 75.6 76.6 73.0 drafting tensions (DT), g/d 1.13 1.15 0.99 crystallite dimensions, 100 () 54.0 61.2 43.0 crystallite dimensions, 010 () 32.4 37.2 28.6 chip area (A ²* 10 ²) 17.5 22.8 12.3 crystal grain orientation angles, the COA NA complete indexes of 20.0 NA crystallization (CPI) 53.0 66.3 62.1 are at interval long-term, LPS (A) NA 91 NA

Table X I (continuing) structural property XI-1 XI-2C XI-3C density, ρ (g/cm ₃) 1.131 1.1389 1.1327 birefringences (△ n), 0.0405 0.0422 0.0445 optical density (OD) (R _ISO) 1.5364 1.5376 1.5353S/C (△ N) _0.95-0.050.0047 0.0008 0.0047S/C (△ R _ISO) _0.95-0.050.0010 0.0008 (0.0017) modulus of torsional shear (Gpa) .143 .184 .204 sonic modulus, 43.8 50.1 46.7MAS C-13NMR (Hz), 150 200 200DSC fusing points, T _M, (℃) 255 262 260DSC burn-off rates (mwt/min), 46.5 35.7 33.3 shrink tension (ST _MAX), g/d

20℃/min .081 .092 .099

30℃/min 0.076 .086 .066)

Table X I (continuing) structural property XI-1 XI-2C XI-3CT (ST _MAX), C

20℃/min 70 69 72

30 ℃/min, 67 69 69 Qian Shenyingli @75C (σ _D), g/d 1.75 2.02 2.02 drawing-off Mo Liang @75C (M _D), g/d 3.70 6.00 5.2 drawing-off energy, (E _D) a 0.32 0.40 0.37DMA transition temperature

Tc，℃ 40.4 51.2 41.8

T (alpha), ℃ 87.8 87.8 102.6 boiling water shrinkages, BOS (%) 3.8 3.4 NA dry-hot shrinkages, ABO (%) 4.5 4.6 NATMA dry-hot shrinkages (%)

-100℃ 0.5 0.5 0.5

Table X I (continuing) structural property XI-1 XI-2C XI-3C

-150℃ 1 1 1

-200℃ 2 1.5 2

-250 ℃ of 53 xeothermic percentage of elongation of 5TMA (%)

-100℃ 2 2 1

-150℃ 6.5 6 8

-200 ℃ of 12 10 13TMA, (△ L/ △ T) _MAX, 300MG/D, %/C 0.13 0.12 0.17TMA, d (△ L/ △ T) _MAX/ d (σ _D), * 10 ^-4175 125 100 times of 54 8MBB dyestuffs (50% consumes), min

-40℃ 11 7 3.5

-60℃ 8 9 5

-80℃ 4 4 5.5

Claims (16)

1. a relative viscosity is the preparation method of 50～80 nylon 66 textured multifilament yarn, is included in 200～240 ℃ of following percentage elongation (E _b) be 70～100%, the draw texture feeding yarn of 15～250 DENIER, to provide a kind of percentage elongation less than 35% textured yarn, it is characterized in that being out of shape speed 900 meters of per minutes at least, and feeding yarn is a kind of polyamide comonomer of a small amount of difunctional or on a small quantity can be with nylon 66 polymer of the additive of not participating in reaction of hydrogen bond and nylon 66 polymer phase combinations of containing, and the drafting tension of this yarn (in 185 ° ± DT33%) be at least 0.8g/d and less than 1.2g/d.

2. according to the method for claim 1, it is characterized in that deformation velocity 1km/min at least.

3. according to the method for claim 1 or 2, it is characterized in that the drafted distortion of feeding yarn so that the textured yarn percentage elongation less than 30%.

4. according to the method for claim 1, percentage elongation (E _b) the partially oriented nylon 66 polymer multifilament of 70～100% 15～250 DENIER.

5. according to the method for claim 1, it is characterized in that elder generation's preparation DENIER number is 15 to 250 nylon 66 polymer spinning orientation multifilament, is used as the yarn feeding in the draw texture processing then.

6. nylon 66 multifilament of a distortion, this multifilament has the percentage elongation (E less than 35% _b), relative viscosity is 50 to 80, it is characterized in that the additive of not participating in reaction that the yarn of mainly being made up of nylon 66 polymer contains the polyamide comonomer of a small amount of difunctional or can combine with nylon 66 polymer with hydrogen bond on a small quantity, said yarn can deformation velocity at least per minute 900 rice grain patterns cross the draw texture acquisition.

7. according to the textured yarn of claim 6, it is characterized in that chain link that polymer contains a spot of epsilon-amino caproyl act as the additive comonomer of difunctional.

8. according to the textured yarn of claim 6, it is characterized in that polymer contains a small amount of 2-methyl isophthalic acid, 5-pentylidene base adipamide unit is as the additive comonomer of difunctional.

9. according to the textured yarn of claim 7, it is characterized in that polymer contains the additive comonomer of the epsilon-amino caproyl chain link of 2 to 8% weight ratios as difunctional.

10. textured yarn according to Claim 8 is characterized in that polymer content has the 2-methyl isophthalic acid of 2 to 20% weight ratios, and 5-pentylidene adipamide unit is as the additive comonomer of difunctional.

11. textured yarn according to Claim 8 is characterized in that polymer contains the 2-methyl isophthalic acid of 20 to 40% weight ratios, 5-pentylidene adipamide unit is as the additive comonomer of difunctional, and yarn has the boiling water shrinkage greater than 8%.

12., it is characterized in that relative viscosity is 60 to 70 according to each textured yarn among the claim 7-11.

13. according to Claim 8,10 or 11 textured yarn, it is characterized in that relative viscosity is 50 to 60.

14. each textured yarn according to Claim 8-11 is characterized in that having the percentage elongation (E less than 30% _b).

15. each textured yarn according to Claim 8-11 is characterized in that the method preparation according to claim 1.

16. percentage elongation (E _b) nylon 66 multifilament of distortion less than 35%, relative viscosity is 50 to 80, it is characterized in that yarn to small part contains basically by the yarn silk of having of forming of nylon 66 polymer less than 6% boiling water shrinkage, nylon 66 long filaments of forming yarn are basically by the 2-methyl isophthalic acid that contains 20 to 40% weight ratios, 5-pentylidene adipamide unit, the difference at least 4% of said long filament on the % shrinkage factor.

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